diff --git a/src/main/java/org/openepics/names/rest/controller/GlobalControllerExceptionHandler.java b/src/main/java/org/openepics/names/rest/controller/GlobalControllerExceptionHandler.java
index 671162281461e57d068e19f9a7804930e9501d9c..5aaf9bddcb89a4a59800d5ea5a4b9807aff648bb 100644
--- a/src/main/java/org/openepics/names/rest/controller/GlobalControllerExceptionHandler.java
+++ b/src/main/java/org/openepics/names/rest/controller/GlobalControllerExceptionHandler.java
@@ -18,9 +18,6 @@
 
 package org.openepics.names.rest.controller;
 
-import java.util.logging.Level;
-import java.util.logging.Logger;
-
 import org.apache.commons.lang3.StringUtils;
 import org.openepics.names.rest.beans.response.Response;
 import org.openepics.names.service.exception.DataConflictException;
@@ -62,12 +59,8 @@ public class GlobalControllerExceptionHandler extends ResponseEntityExceptionHan
     // note
     //     no logging here
 
-    private static final Logger LOGGER = Logger.getLogger(GlobalControllerExceptionHandler.class.getName());
-
     @ExceptionHandler
     protected ResponseEntity<Response> handleConflict(RuntimeException ex, WebRequest request) {
-        LOGGER.log(Level.INFO, "handleConflict, ex.getMessage: " + ex.getMessage());
-
         Response response = new Response("", "", "");
         response.setMessage(TextUtil.OPERATION_COULD_NOT_BE_PERFORMED);
 
diff --git a/src/main/java/org/openepics/names/util/EnumUtil.java b/src/main/java/org/openepics/names/util/EnumUtil.java
index e8423086e57240af08bb924ba4b93eff11e2dd68..ae1e9771957e7070f7015e9226f5379bff41d820 100644
--- a/src/main/java/org/openepics/names/util/EnumUtil.java
+++ b/src/main/java/org/openepics/names/util/EnumUtil.java
@@ -25,8 +25,8 @@ package org.openepics.names.util;
  */
 public class EnumUtil {
 
-    public static enum NameChoice      {CREATE, UPDATE, DELETE};
-    public static enum StructureChoice {CREATE, UPDATE, DELETE, APPROVE, REJECT, CANCEL};
+    public enum NameChoice      {CREATE, UPDATE, DELETE}
+    public enum StructureChoice {CREATE, UPDATE, DELETE, APPROVE, REJECT, CANCEL}
 
     /**
      * This class is not to be instantiated.
diff --git a/src/main/java/org/openepics/names/util/HolderIRepositories.java b/src/main/java/org/openepics/names/util/HolderIRepositories.java
index d0b8e5fdd0f81bcd686dcc7968d42133b19f2047..f168c14120bac197e255c67c2f99ebc5888b16ad 100644
--- a/src/main/java/org/openepics/names/util/HolderIRepositories.java
+++ b/src/main/java/org/openepics/names/util/HolderIRepositories.java
@@ -78,7 +78,7 @@ public class HolderIRepositories {
      */
     public INameRepository getNameRepository() {
         return nameRepository;
-    };
+    }
 
     /**
      * Return reference to system group repository.
@@ -87,7 +87,7 @@ public class HolderIRepositories {
      */
     public ISystemGroupRepository getSystemGroupRepository() {
         return systemGroupRepository;
-    };
+    }
     /**
      * Return reference to system repository.
      *
@@ -95,7 +95,7 @@ public class HolderIRepositories {
      */
     public ISystemRepository getSystemRepository() {
         return systemRepository;
-    };
+    }
     /**
      * Return reference to subsystem repository.
      *
@@ -103,7 +103,7 @@ public class HolderIRepositories {
      */
     public ISubsystemRepository getSubsystemRepository() {
         return subsystemRepository;
-    };
+    }
 
     /**
      * Return reference to discipline repository.
@@ -112,7 +112,7 @@ public class HolderIRepositories {
      */
     public IDisciplineRepository getDisciplineRepository() {
         return disciplineRepository;
-    };
+    }
     /**
      * Return reference to device group repository.
      *
@@ -120,7 +120,7 @@ public class HolderIRepositories {
      */
     public IDeviceGroupRepository getDeviceGroupRepository() {
         return deviceGroupRepository;
-    };
+    }
     /**
      * Return reference to device type repository.
      *
@@ -128,6 +128,6 @@ public class HolderIRepositories {
      */
     public IDeviceTypeRepository getDeviceTypeRepository() {
         return deviceTypeRepository;
-    };
+    }
 
 }
diff --git a/src/main/java/org/openepics/names/util/HolderRepositories.java b/src/main/java/org/openepics/names/util/HolderRepositories.java
index 0fcd1dfe8d1de9f6a30a83f78407c36d7fa15368..3d73915a6fe98e61618ca579be831bbb5ed10a82 100644
--- a/src/main/java/org/openepics/names/util/HolderRepositories.java
+++ b/src/main/java/org/openepics/names/util/HolderRepositories.java
@@ -78,7 +78,7 @@ public class HolderRepositories {
      */
     public NameRepository getNameRepository() {
         return nameRepository;
-    };
+    }
 
     /**
      * Return reference to system group repository.
@@ -87,7 +87,7 @@ public class HolderRepositories {
      */
     public SystemGroupRepository getSystemGroupRepository() {
         return systemGroupRepository;
-    };
+    }
     /**
      * Return reference to system repository.
      *
@@ -95,7 +95,7 @@ public class HolderRepositories {
      */
     public SystemRepository getSystemRepository() {
         return systemRepository;
-    };
+    }
     /**
      * Return reference to subsystem repository.
      *
@@ -103,7 +103,7 @@ public class HolderRepositories {
      */
     public SubsystemRepository getSubsystemRepository() {
         return subsystemRepository;
-    };
+    }
 
     /**
      * Return reference to discipline repository.
@@ -112,7 +112,7 @@ public class HolderRepositories {
      */
     public DisciplineRepository getDisciplineRepository() {
         return disciplineRepository;
-    };
+    }
     /**
      * Return reference to device group repository.
      *
@@ -120,7 +120,7 @@ public class HolderRepositories {
      */
     public DeviceGroupRepository getDeviceGroupRepository() {
         return deviceGroupRepository;
-    };
+    }
     /**
      * Return reference to device type repository.
      *
@@ -128,6 +128,6 @@ public class HolderRepositories {
      */
     public DeviceTypeRepository getDeviceTypeRepository() {
         return deviceTypeRepository;
-    };
+    }
 
 }
diff --git a/src/main/java/org/openepics/names/util/HolderSystemDeviceStructure.java b/src/main/java/org/openepics/names/util/HolderSystemDeviceStructure.java
index 456c4c42b4671629efc1cac6fa944b4c6a349da3..9ae0ee0951ccdd980d26a90384f9753f82cffcc6 100644
--- a/src/main/java/org/openepics/names/util/HolderSystemDeviceStructure.java
+++ b/src/main/java/org/openepics/names/util/HolderSystemDeviceStructure.java
@@ -20,6 +20,7 @@ package org.openepics.names.util;
 
 import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 import java.util.UUID;
 
 import org.openepics.names.repository.model.DeviceGroup;
@@ -190,7 +191,7 @@ public class HolderSystemDeviceStructure {
      *
      * @return map with key-value pairs (uuid and system group)
      */
-    public HashMap<UUID, SystemGroup> getUuidSystemGroups() {
+    public Map<UUID, SystemGroup> getUuidSystemGroups() {
         return systemGroups;
     }
 
@@ -199,7 +200,7 @@ public class HolderSystemDeviceStructure {
      *
      * @return map with key-value pairs (uuid and system)
      */
-    public HashMap<UUID, System> getUuidSystems() {
+    public Map<UUID, System> getUuidSystems() {
         return systems;
     }
 
@@ -208,7 +209,7 @@ public class HolderSystemDeviceStructure {
      *
      * @return map with key-value pairs (uuid and subsystem)
      */
-    public HashMap<UUID, Subsystem> getUuidSubsystems() {
+    public Map<UUID, Subsystem> getUuidSubsystems() {
         return subsystems;
     }
 
@@ -217,7 +218,7 @@ public class HolderSystemDeviceStructure {
      *
      * @return map with key-value pairs (uuid and discipline)
      */
-    public HashMap<UUID, Discipline> getUuidDisciplines() {
+    public Map<UUID, Discipline> getUuidDisciplines() {
         return disciplines;
     }
 
@@ -226,7 +227,7 @@ public class HolderSystemDeviceStructure {
      *
      * @return map with key-value pairs (uuid and device group)
      */
-    public HashMap<UUID, DeviceGroup> getUuidDeviceGroups() {
+    public Map<UUID, DeviceGroup> getUuidDeviceGroups() {
         return deviceGroups;
     }
 
@@ -235,7 +236,8 @@ public class HolderSystemDeviceStructure {
      *
      * @return map with key-value pairs (uuid and device type)
      */
-    public HashMap<UUID, DeviceType> getUuidDeviceTypes() {
+    public Map<UUID, DeviceType> getUuidDeviceTypes() {
         return deviceTypes;
     }
+
 }
diff --git a/src/main/java/org/openepics/names/util/NameUtil.java b/src/main/java/org/openepics/names/util/NameUtil.java
index 947524391448715d043694d6cc4c4963f2671319..e8153db83ac34fecf6499d2d80d06f8e0485ea0d 100644
--- a/src/main/java/org/openepics/names/util/NameUtil.java
+++ b/src/main/java/org/openepics/names/util/NameUtil.java
@@ -59,7 +59,7 @@ public class NameUtil {
         int count = 0;
         if (name.getSystemgroupUuid() != null) {
             count++;
-        };
+        }
         if (name.getSystemUuid() != null) {
             count++;
         }
diff --git a/src/main/java/org/openepics/names/util/StructureElementUtil.java b/src/main/java/org/openepics/names/util/StructureElementUtil.java
index f26e2aca790a68c5034917aaacf4ba3a9b06f5a3..bfaf04980a4019ccc71e53e2800c298577f05cff 100644
--- a/src/main/java/org/openepics/names/util/StructureElementUtil.java
+++ b/src/main/java/org/openepics/names/util/StructureElementUtil.java
@@ -43,7 +43,7 @@ import com.google.common.collect.Lists;
  */
 public class StructureElementUtil {
 
-    public static enum StructureChoice {HISTORY, STRUCTURE};
+    public enum StructureChoice {HISTORY, STRUCTURE}
 
     private static final long THOUSAND_MILLISECONDS = 1000;
 
diff --git a/src/main/java/org/openepics/names/util/ValidateUtil.java b/src/main/java/org/openepics/names/util/ValidateUtil.java
index 7afc513e1c9ca92e8d17aa32a74bd8f4f587d49b..323aa70c6bc7a0d74c32cd107628869b68456901 100644
--- a/src/main/java/org/openepics/names/util/ValidateUtil.java
+++ b/src/main/java/org/openepics/names/util/ValidateUtil.java
@@ -69,8 +69,8 @@ public class ValidateUtil {
     //	       update - uuid, type, parent, name, mnemonic, description, comment
     //	       delete - uuid, type                                       comment
 
-    private static enum NameChoice      {CREATE, UPDATE, DELETE};
-    private static enum StructureChoice {CREATE, UPDATE, DELETE, APPROVE, REJECT, CANCEL};
+    private enum NameChoice      {CREATE, UPDATE, DELETE}
+    private enum StructureChoice {CREATE, UPDATE, DELETE, APPROVE, REJECT, CANCEL}
 
     /**
      * This class is not to be instantiated.
@@ -530,7 +530,7 @@ public class ValidateUtil {
         int count = 0;
         if (sg != null) {
             count++;
-        };
+        }
         if (sys != null) {
             count++;
         }
diff --git a/src/test/java/org/openepics/names/docker/HealthcheckIT.java b/src/test/java/org/openepics/names/docker/HealthcheckIT.java
index 868d39968effe517d4e0cf996683e5466e2f282f..ed799e03504d473039b63b54eabc382784119373 100644
--- a/src/test/java/org/openepics/names/docker/HealthcheckIT.java
+++ b/src/test/java/org/openepics/names/docker/HealthcheckIT.java
@@ -43,7 +43,7 @@ import org.testcontainers.junit.jupiter.Testcontainers;
  * @author Lars Johansson
  */
 @Testcontainers
-public class HealthcheckIT {
+class HealthcheckIT {
 
     @Container
     public static final DockerComposeContainer<?> ENVIRONMENT =
@@ -51,7 +51,7 @@ public class HealthcheckIT {
             .waitingFor(ITUtil.NAMING, Wait.forLogMessage(".*Started NamingApplication.*", 1));
 
     @Test
-    public void readHealthcheck() {
+    void readHealthcheck() {
         try {
             String address = ITUtil.HTTP_IP_PORT_NAMING + "/healthcheck";
             int responseCode = ITUtil.doGet(address);
diff --git a/src/test/java/org/openepics/names/docker/NamesIT.java b/src/test/java/org/openepics/names/docker/NamesIT.java
index dccd7cde6f63d9b1ff1055df7a1117ad316f15ca..740fcea5d48a8dad937735dafae3ccbccf783552 100644
--- a/src/test/java/org/openepics/names/docker/NamesIT.java
+++ b/src/test/java/org/openepics/names/docker/NamesIT.java
@@ -51,7 +51,7 @@ import com.fasterxml.jackson.databind.ObjectMapper;
  * @author Lars Johansson
  */
 @Testcontainers
-public class NamesIT {
+class NamesIT {
 
     // note
     //     NameElement extends NameElementCommand, StructureElement extends StructureElementCommand
@@ -155,7 +155,7 @@ public class NamesIT {
     }
 
     @Test
-    public void equivalenceName() {
+    void equivalenceName() {
         // purpose
         //     test name equivalence
         //
@@ -166,7 +166,7 @@ public class NamesIT {
     }
 
     @Test
-    public void existsName() {
+    void existsName() {
         // purpose
         //     test if name exists
         //
@@ -177,7 +177,7 @@ public class NamesIT {
     }
 
     @Test
-    public void isLegacyName() {
+    void isLegacyName() {
         // purpose
         //     test if name is legacy name
         //
@@ -188,7 +188,7 @@ public class NamesIT {
     }
 
     @Test
-    public void isValidToCreateName() {
+    void isValidToCreateName() {
         // purpose
         //     test if name is valid to create
         //
@@ -199,7 +199,7 @@ public class NamesIT {
     }
 
     @Test
-    public void checkCreate() {
+    void checkCreate() {
         // purpose
         //     test conditions for create name
         //         not create itself
@@ -358,7 +358,7 @@ public class NamesIT {
     }
 
     @Test
-    public void create() {
+    void create() {
         // purpose
         //     test create name
         //
@@ -413,7 +413,7 @@ public class NamesIT {
     }
 
     @Test
-    public void checkUpdate() {
+    void checkUpdate() {
         // purpose
         //     test conditions for update name
         //         not update
@@ -525,7 +525,7 @@ public class NamesIT {
     }
 
     @Test
-    public void update() {
+    void update() {
         // purpose
         //     test update name
         //
@@ -569,7 +569,7 @@ public class NamesIT {
     }
 
     @Test
-    public void checkDelete() {
+    void checkDelete() {
         // purpose
         //     test conditions for delete name
         //         not delete
@@ -647,7 +647,7 @@ public class NamesIT {
     }
 
     @Test
-    public void delete() {
+    void delete() {
         // purpose
         //     test delete name
         //
@@ -693,7 +693,7 @@ public class NamesIT {
     }
 
     @Test
-    public void readSearchHistoryDeleted() {
+    void readSearchHistoryDeleted() {
         // purpose
         //     test read names in various ways for create
         //         search
diff --git a/src/test/java/org/openepics/names/docker/StructuresDeviceGroupIT.java b/src/test/java/org/openepics/names/docker/StructuresDeviceGroupIT.java
index d55e71dc71722892f73ac04de38756ef929b4487..c3c204b222556cb35f20b588f1a9f1515aa9427f 100644
--- a/src/test/java/org/openepics/names/docker/StructuresDeviceGroupIT.java
+++ b/src/test/java/org/openepics/names/docker/StructuresDeviceGroupIT.java
@@ -49,7 +49,7 @@ import org.testcontainers.junit.jupiter.Testcontainers;
  * @author Lars Johansson
  */
 @Testcontainers
-public class StructuresDeviceGroupIT {
+class StructuresDeviceGroupIT {
 
     // note
     //     StructureElement - when, who, comment - depend on requested or processed
@@ -104,7 +104,7 @@ public class StructuresDeviceGroupIT {
     }
 
     @Test
-    public void equivalenceMnemonic() {
+    void equivalenceMnemonic() {
         // purpose
         //     test mnemonic equivalence
         //
@@ -115,7 +115,7 @@ public class StructuresDeviceGroupIT {
     }
 
     @Test
-    public void checkCreate() {
+    void checkCreate() {
         // purpose
         //     test conditions for create device group
         //         not create itself
@@ -180,7 +180,7 @@ public class StructuresDeviceGroupIT {
     }
 
     @Test
-    public void checkCreateMnemonic() {
+    void checkCreateMnemonic() {
         // purpose
         //     test conditions for create device group
         //         not create itself
@@ -292,7 +292,7 @@ public class StructuresDeviceGroupIT {
     }
 
     @Test
-    public void createApprove() {
+    void createApprove() {
         // purpose
         //     test create and approve system
         //
@@ -342,7 +342,7 @@ public class StructuresDeviceGroupIT {
     }
 
     @Test
-    public void createCancel() {
+    void createCancel() {
         // purpose
         //     test create and cancel system
         //
@@ -392,7 +392,7 @@ public class StructuresDeviceGroupIT {
     }
 
     @Test
-    public void createReject() {
+    void createReject() {
         // purpose
         //     test create and reject system
         //
@@ -442,7 +442,7 @@ public class StructuresDeviceGroupIT {
     }
 
     @Test
-    public void checkUpdate() {
+    void checkUpdate() {
         // purpose
         //     test conditions for update device group
         //         not update
@@ -534,7 +534,7 @@ public class StructuresDeviceGroupIT {
     }
 
     @Test
-    public void updateApprove() {
+    void updateApprove() {
         // purpose
         //     test update and approve device group
         //
@@ -581,7 +581,7 @@ public class StructuresDeviceGroupIT {
     }
 
     @Test
-    public void updateCancel() {
+    void updateCancel() {
         // purpose
         //     test update and cancel device group
         //
@@ -630,7 +630,7 @@ public class StructuresDeviceGroupIT {
     }
 
     @Test
-    public void updateReject() {
+    void updateReject() {
         // purpose
         //     test update and reject device group
         //
@@ -679,7 +679,7 @@ public class StructuresDeviceGroupIT {
     }
 
     @Test
-    public void checkDelete() {
+    void checkDelete() {
         // purpose
         //     test conditions for delete device group
         //         not delete
@@ -767,7 +767,7 @@ public class StructuresDeviceGroupIT {
     }
 
     @Test
-    public void deleteApprove() {
+    void deleteApprove() {
         // purpose
         //     test delete and approve device group
         //
@@ -814,7 +814,7 @@ public class StructuresDeviceGroupIT {
     }
 
     @Test
-    public void deleteCancel() {
+    void deleteCancel() {
         // purpose
         //     test delete and cancel device group
         //
@@ -863,7 +863,7 @@ public class StructuresDeviceGroupIT {
     }
 
     @Test
-    public void deleteReject() {
+    void deleteReject() {
         // purpose
         //     test delete and reject device group
         //
@@ -912,7 +912,7 @@ public class StructuresDeviceGroupIT {
     }
 
     @Test
-    public void readSearchHistoryApprove() {
+    void readSearchHistoryApprove() {
         // purpose
         //     test read device group in various ways for create, approve
         //         search
@@ -994,7 +994,7 @@ public class StructuresDeviceGroupIT {
     }
 
     @Test
-    public void readSearchHistoryCancel() {
+    void readSearchHistoryCancel() {
         // purpose
         //     test read device group in various ways for create, cancel
         //         search
@@ -1076,7 +1076,7 @@ public class StructuresDeviceGroupIT {
     }
 
     @Test
-    public void readSearchHistoryReject() {
+    void readSearchHistoryReject() {
         // purpose
         //     test read device group in various ways for create, reject
         //         search
@@ -1158,7 +1158,7 @@ public class StructuresDeviceGroupIT {
     }
 
     @Test
-    public void readSearchHistoryStatusLatest1() {
+    void readSearchHistoryStatusLatest1() {
         // purpose
         //     test read device type in various ways
         //         status
@@ -1260,7 +1260,7 @@ public class StructuresDeviceGroupIT {
     }
 
     @Test
-    public void readSearchHistoryStatusLatest9() {
+    void readSearchHistoryStatusLatest9() {
         // purpose
         //     test read device type in various ways
         //         status
@@ -1430,7 +1430,7 @@ public class StructuresDeviceGroupIT {
     }
 
     @Test
-    public void readSearchStatusDeletedChildren() {
+    void readSearchStatusDeletedChildren() {
         // purpose
         //     test read device group in various ways
         //         status
diff --git a/src/test/java/org/openepics/names/docker/StructuresDeviceTypeIT.java b/src/test/java/org/openepics/names/docker/StructuresDeviceTypeIT.java
index 2c43e23bbfef001a982b5ea2d95278eac26b4420..e12710bd26cde3d002c62550f4072a506c2f3e1f 100644
--- a/src/test/java/org/openepics/names/docker/StructuresDeviceTypeIT.java
+++ b/src/test/java/org/openepics/names/docker/StructuresDeviceTypeIT.java
@@ -49,7 +49,7 @@ import org.testcontainers.junit.jupiter.Testcontainers;
  * @author Lars Johansson
  */
 @Testcontainers
-public class StructuresDeviceTypeIT {
+class StructuresDeviceTypeIT {
 
     // note
     //     StructureElement - when, who, comment - depend on requested or processed
@@ -104,7 +104,7 @@ public class StructuresDeviceTypeIT {
     }
 
     @Test
-    public void equivalenceMnemonic() {
+    void equivalenceMnemonic() {
         // purpose
         //     test mnemonic equivalence
         //
@@ -115,7 +115,7 @@ public class StructuresDeviceTypeIT {
     }
 
     @Test
-    public void checkCreate() {
+    void checkCreate() {
         // purpose
         //     test conditions for create device type
         //         not create itself
@@ -192,7 +192,7 @@ public class StructuresDeviceTypeIT {
     }
 
     @Test
-    public void checkCreateMnemonic() {
+    void checkCreateMnemonic() {
         // purpose
         //     test conditions for create device type
         //         not create itself
@@ -304,7 +304,7 @@ public class StructuresDeviceTypeIT {
     }
 
     @Test
-    public void createApprove() {
+    void createApprove() {
         // purpose
         //     test create and approve system
         //
@@ -354,7 +354,7 @@ public class StructuresDeviceTypeIT {
     }
 
     @Test
-    public void createCancel() {
+    void createCancel() {
         // purpose
         //     test create and cancel system
         //
@@ -404,7 +404,7 @@ public class StructuresDeviceTypeIT {
     }
 
     @Test
-    public void createReject() {
+    void createReject() {
         // purpose
         //     test create and reject system
         //
@@ -454,7 +454,7 @@ public class StructuresDeviceTypeIT {
     }
 
     @Test
-    public void checkUpdate() {
+    void checkUpdate() {
         // purpose
         //     test conditions for update device type
         //         not update
@@ -546,7 +546,7 @@ public class StructuresDeviceTypeIT {
     }
 
     @Test
-    public void updateApprove() {
+    void updateApprove() {
         // purpose
         //     test update and approve device type
         //
@@ -593,7 +593,7 @@ public class StructuresDeviceTypeIT {
     }
 
     @Test
-    public void updateCancel() {
+    void updateCancel() {
         // purpose
         //     test update and cancel device type
         //
@@ -642,7 +642,7 @@ public class StructuresDeviceTypeIT {
     }
 
     @Test
-    public void updateReject() {
+    void updateReject() {
         // purpose
         //     test update and reject device type
         //
@@ -691,7 +691,7 @@ public class StructuresDeviceTypeIT {
     }
 
     @Test
-    public void checkDelete() {
+    void checkDelete() {
         // purpose
         //     test conditions for delete device type
         //         not delete
@@ -779,7 +779,7 @@ public class StructuresDeviceTypeIT {
     }
 
     @Test
-    public void deleteApprove() {
+    void deleteApprove() {
         // purpose
         //     test delete and approve device type
         //
@@ -826,7 +826,7 @@ public class StructuresDeviceTypeIT {
     }
 
     @Test
-    public void deleteCancel() {
+    void deleteCancel() {
         // purpose
         //     test delete and cancel device type
         //
@@ -875,7 +875,7 @@ public class StructuresDeviceTypeIT {
     }
 
     @Test
-    public void deleteReject() {
+    void deleteReject() {
         // purpose
         //     test delete and reject device type
         //
@@ -924,7 +924,7 @@ public class StructuresDeviceTypeIT {
     }
 
     @Test
-    public void readSearchHistoryApprove() {
+    void readSearchHistoryApprove() {
         // purpose
         //     test read device type in various ways for create, approve
         //         search
@@ -1008,7 +1008,7 @@ public class StructuresDeviceTypeIT {
     }
 
     @Test
-    public void readSearchHistoryCancel() {
+    void readSearchHistoryCancel() {
         // purpose
         //     test read device type in various ways for create, cancel
         //         search
@@ -1092,7 +1092,7 @@ public class StructuresDeviceTypeIT {
     }
 
     @Test
-    public void readSearchHistoryReject() {
+    void readSearchHistoryReject() {
         // purpose
         //     test read device type in various ways for create, reject
         //         search
@@ -1176,7 +1176,7 @@ public class StructuresDeviceTypeIT {
     }
 
     @Test
-    public void readSearchHistoryStatusLatest1() {
+    void readSearchHistoryStatusLatest1() {
         // purpose
         //     test read device type in various ways
         //         status
@@ -1281,7 +1281,7 @@ public class StructuresDeviceTypeIT {
     }
 
     @Test
-    public void readSearchHistoryStatusLatest9() {
+    void readSearchHistoryStatusLatest9() {
         // purpose
         //     test read device type in various ways
         //         status
@@ -1454,7 +1454,7 @@ public class StructuresDeviceTypeIT {
     }
 
     @Test
-    public void readSearchStatusDeletedChildren() {
+    void readSearchStatusDeletedChildren() {
         // purpose
         //     test read device type in various ways
         //         status
diff --git a/src/test/java/org/openepics/names/docker/StructuresDisciplineIT.java b/src/test/java/org/openepics/names/docker/StructuresDisciplineIT.java
index 00fbe9cdd66d2691ae8758f6c47531d50054e968..b92dac7e45b9c02481c81e216a09d2a39e68c1ca 100644
--- a/src/test/java/org/openepics/names/docker/StructuresDisciplineIT.java
+++ b/src/test/java/org/openepics/names/docker/StructuresDisciplineIT.java
@@ -48,7 +48,7 @@ import org.testcontainers.junit.jupiter.Testcontainers;
  * @author Lars Johansson
  */
 @Testcontainers
-public class StructuresDisciplineIT {
+class StructuresDisciplineIT {
 
     // note
     //     StructureElement - when, who, comment - depend on requested or processed
@@ -78,7 +78,7 @@ public class StructuresDisciplineIT {
             .waitingFor(ITUtil.NAMING, Wait.forLogMessage(".*Started NamingApplication.*", 1));
 
     @Test
-    public void equivalenceMnemonic() {
+    void equivalenceMnemonic() {
         // purpose
         //     test mnemonic equivalence
         //
@@ -89,7 +89,7 @@ public class StructuresDisciplineIT {
     }
 
     @Test
-    public void checkCreate() {
+    void checkCreate() {
         // purpose
         //     test conditions for create discipline
         //         not create itself
@@ -149,7 +149,7 @@ public class StructuresDisciplineIT {
     }
 
     @Test
-    public void checkCreateMnemonic() {
+    void checkCreateMnemonic() {
         // purpose
         //     test conditions for create discipline
         //         not create itself
@@ -260,7 +260,7 @@ public class StructuresDisciplineIT {
     }
 
     @Test
-    public void createApprove() {
+    void createApprove() {
         // purpose
         //     test create and approve discipline
         //
@@ -310,7 +310,7 @@ public class StructuresDisciplineIT {
     }
 
     @Test
-    public void createCancel() {
+    void createCancel() {
         // purpose
         //     test create and cancel discipline
         //
@@ -360,7 +360,7 @@ public class StructuresDisciplineIT {
     }
 
     @Test
-    public void createReject() {
+    void createReject() {
         // purpose
         //     test create and reject discipline
         //
@@ -410,7 +410,7 @@ public class StructuresDisciplineIT {
     }
 
     @Test
-    public void checkUpdate() {
+    void checkUpdate() {
         // purpose
         //     test conditions for update discipline
         //         not update
@@ -495,7 +495,7 @@ public class StructuresDisciplineIT {
     }
 
     @Test
-    public void updateApprove() {
+    void updateApprove() {
         // purpose
         //     test update and approve discipline
         //
@@ -542,7 +542,7 @@ public class StructuresDisciplineIT {
     }
 
     @Test
-    public void updateCancel() {
+    void updateCancel() {
         // purpose
         //     test update and cancel discipline
         //
@@ -591,7 +591,7 @@ public class StructuresDisciplineIT {
     }
 
     @Test
-    public void updateReject() {
+    void updateReject() {
         // purpose
         //     test update and reject discipline
         //
@@ -640,7 +640,7 @@ public class StructuresDisciplineIT {
     }
 
     @Test
-    public void checkDelete() {
+    void checkDelete() {
         // purpose
         //     test conditions for delete discipline
         //         not delete
@@ -722,7 +722,7 @@ public class StructuresDisciplineIT {
     }
 
     @Test
-    public void deleteApprove() {
+    void deleteApprove() {
         // purpose
         //     test delete and approve discipline
         //
@@ -769,7 +769,7 @@ public class StructuresDisciplineIT {
     }
 
     @Test
-    public void deleteCancel() {
+    void deleteCancel() {
         // purpose
         //     test delete and cancel discipline
         //
@@ -818,7 +818,7 @@ public class StructuresDisciplineIT {
     }
 
     @Test
-    public void deleteReject() {
+    void deleteReject() {
         // purpose
         //     test delete and reject discipline
         //
@@ -867,7 +867,7 @@ public class StructuresDisciplineIT {
     }
 
     @Test
-    public void readSearchHistoryApprove() {
+    void readSearchHistoryApprove() {
         // purpose
         //     test read discipline in various ways for create, approve
         //         search
@@ -941,7 +941,7 @@ public class StructuresDisciplineIT {
     }
 
     @Test
-    public void readSearchHistoryCancel() {
+    void readSearchHistoryCancel() {
         // purpose
         //     test read discipline in various ways for create, cancel
         //         search
@@ -1015,7 +1015,7 @@ public class StructuresDisciplineIT {
     }
 
     @Test
-    public void readSearchHistoryReject() {
+    void readSearchHistoryReject() {
         // purpose
         //     test read discipline in various ways for create, reject
         //         search
@@ -1089,7 +1089,7 @@ public class StructuresDisciplineIT {
     }
 
     @Test
-    public void readSearchHistoryStatusLatest1() {
+    void readSearchHistoryStatusLatest1() {
         // purpose
         //     test read discipline in various ways
         //         status
@@ -1190,7 +1190,7 @@ public class StructuresDisciplineIT {
     }
 
     @Test
-    public void readSearchHistoryStatusLatest9() {
+    void readSearchHistoryStatusLatest9() {
         // purpose
         //     test read discipline in various ways
         //         status
@@ -1359,7 +1359,7 @@ public class StructuresDisciplineIT {
     }
 
     @Test
-    public void readSearchStatusDeletedChildren() {
+    void readSearchStatusDeletedChildren() {
         // purpose
         //     test read discipline in various ways
         //         status
diff --git a/src/test/java/org/openepics/names/docker/StructuresSubsystemIT.java b/src/test/java/org/openepics/names/docker/StructuresSubsystemIT.java
index 830a7af82db603ab563e7e002d6816e4c8a9eddf..8a0aaab98b63e49a23e7ca782ec5d022d28ed807 100644
--- a/src/test/java/org/openepics/names/docker/StructuresSubsystemIT.java
+++ b/src/test/java/org/openepics/names/docker/StructuresSubsystemIT.java
@@ -49,7 +49,7 @@ import org.testcontainers.junit.jupiter.Testcontainers;
  * @author Lars Johansson
  */
 @Testcontainers
-public class StructuresSubsystemIT {
+class StructuresSubsystemIT {
 
     // note
     //     StructureElement - when, who, comment - depend on requested or processed
@@ -104,7 +104,7 @@ public class StructuresSubsystemIT {
     }
 
     @Test
-    public void equivalenceMnemonic() {
+    void equivalenceMnemonic() {
         // purpose
         //     test mnemonic equivalence
         //
@@ -115,7 +115,7 @@ public class StructuresSubsystemIT {
     }
 
     @Test
-    public void checkCreate() {
+    void checkCreate() {
         // purpose
         //     test conditions for create subsystem
         //         not create itself
@@ -194,7 +194,7 @@ public class StructuresSubsystemIT {
     }
 
     @Test
-    public void checkCreateMnemonic() {
+    void checkCreateMnemonic() {
         // purpose
         //     test conditions for create subsystem
         //         not create itself
@@ -306,7 +306,7 @@ public class StructuresSubsystemIT {
     }
 
     @Test
-    public void createApprove() {
+    void createApprove() {
         // purpose
         //     test create and approve subsystem
         //
@@ -356,7 +356,7 @@ public class StructuresSubsystemIT {
     }
 
     @Test
-    public void createCancel() {
+    void createCancel() {
         // purpose
         //     test create and cancel subsystem
         //
@@ -406,7 +406,7 @@ public class StructuresSubsystemIT {
     }
 
     @Test
-    public void createReject() {
+    void createReject() {
         // purpose
         //     test create and reject subsystem
         //
@@ -456,7 +456,7 @@ public class StructuresSubsystemIT {
     }
 
     @Test
-    public void checkUpdate() {
+    void checkUpdate() {
         // purpose
         //     test conditions for update subsystem
         //         not update
@@ -548,7 +548,7 @@ public class StructuresSubsystemIT {
     }
 
     @Test
-    public void updateApprove() {
+    void updateApprove() {
         // purpose
         //     test update and approve subsystem
         //
@@ -595,7 +595,7 @@ public class StructuresSubsystemIT {
     }
 
     @Test
-    public void updateCancel() {
+    void updateCancel() {
         // purpose
         //     test update and cancel subsystem
         //
@@ -644,7 +644,7 @@ public class StructuresSubsystemIT {
     }
 
     @Test
-    public void updateReject() {
+    void updateReject() {
         // purpose
         //     test update and reject subsystem
         //
@@ -693,7 +693,7 @@ public class StructuresSubsystemIT {
     }
 
     @Test
-    public void checkDelete() {
+    void checkDelete() {
         // purpose
         //     test conditions for delete subsystem
         //         not delete
@@ -781,7 +781,7 @@ public class StructuresSubsystemIT {
     }
 
     @Test
-    public void deleteApprove() {
+    void deleteApprove() {
         // purpose
         //     test delete and approve subsystem
         //
@@ -828,7 +828,7 @@ public class StructuresSubsystemIT {
     }
 
     @Test
-    public void deleteCancel() {
+    void deleteCancel() {
         // purpose
         //     test delete and cancel subsystem
         //
@@ -877,7 +877,7 @@ public class StructuresSubsystemIT {
     }
 
     @Test
-    public void deleteReject() {
+    void deleteReject() {
         // purpose
         //     test delete and reject subsystem
         //
@@ -926,7 +926,7 @@ public class StructuresSubsystemIT {
     }
 
     @Test
-    public void readSearchHistoryApprove() {
+    void readSearchHistoryApprove() {
         // purpose
         //     test read subsystem in various ways for create, approve
         //         search
@@ -1024,7 +1024,7 @@ public class StructuresSubsystemIT {
     }
 
     @Test
-    public void readSearchHistoryCancel() {
+    void readSearchHistoryCancel() {
         // purpose
         //     test read subsystem in various ways for create, cancel
         //         search
@@ -1122,7 +1122,7 @@ public class StructuresSubsystemIT {
     }
 
     @Test
-    public void readSearchHistoryReject() {
+    void readSearchHistoryReject() {
         // purpose
         //     test read subsystem in various ways for create, reject
         //         search
@@ -1220,7 +1220,7 @@ public class StructuresSubsystemIT {
     }
 
     @Test
-    public void readSearchHistoryStatusLatest1() {
+    void readSearchHistoryStatusLatest1() {
         // purpose
         //     test read subsystem in various ways
         //         status
@@ -1329,7 +1329,7 @@ public class StructuresSubsystemIT {
     }
 
     @Test
-    public void readSearchHistoryStatusLatest9() {
+    void readSearchHistoryStatusLatest9() {
         // purpose
         //     test read subsystem in various ways
         //         status
@@ -1506,7 +1506,7 @@ public class StructuresSubsystemIT {
     }
 
     @Test
-    public void readSearchStatusDeletedChildren() {
+    void readSearchStatusDeletedChildren() {
         // purpose
         //     test read subsystem in various ways
         //         status
diff --git a/src/test/java/org/openepics/names/docker/StructuresSystemGroupIT.java b/src/test/java/org/openepics/names/docker/StructuresSystemGroupIT.java
index 733ca51ba0fbaa113cde22d73b64b672b20997c3..049779557d421fe23b4f448dab7b83496dc220b5 100644
--- a/src/test/java/org/openepics/names/docker/StructuresSystemGroupIT.java
+++ b/src/test/java/org/openepics/names/docker/StructuresSystemGroupIT.java
@@ -49,7 +49,7 @@ import org.testcontainers.junit.jupiter.Testcontainers;
  * @author Lars Johansson
  */
 @Testcontainers
-public class StructuresSystemGroupIT {
+class StructuresSystemGroupIT {
 
     // note
     //     StructureElement - when, who, comment - depend on requested or processed
@@ -79,7 +79,7 @@ public class StructuresSystemGroupIT {
             .waitingFor(ITUtil.NAMING, Wait.forLogMessage(".*Started NamingApplication.*", 1));
 
     @Test
-    public void equivalenceMnemonic() {
+    void equivalenceMnemonic() {
         // purpose
         //     test mnemonic equivalence
         //
@@ -90,7 +90,7 @@ public class StructuresSystemGroupIT {
     }
 
     @Test
-    public void checkCreate() {
+    void checkCreate() {
         // purpose
         //     test conditions for create system group
         //         not create itself
@@ -161,7 +161,7 @@ public class StructuresSystemGroupIT {
     }
 
     @Test
-    public void checkCreateMnemonic() {
+    void checkCreateMnemonic() {
         // purpose
         //     test conditions for create system group
         //         not create itself
@@ -278,7 +278,7 @@ public class StructuresSystemGroupIT {
     }
 
     @Test
-    public void createApprove() {
+    void createApprove() {
         // purpose
         //     test create and approve system group
         //
@@ -352,7 +352,7 @@ public class StructuresSystemGroupIT {
     }
 
     @Test
-    public void createCancel() {
+    void createCancel() {
         // purpose
         //     test create and cancel system group
         //
@@ -402,7 +402,7 @@ public class StructuresSystemGroupIT {
     }
 
     @Test
-    public void createReject() {
+    void createReject() {
         // purpose
         //     test create and reject system group
         //
@@ -452,7 +452,7 @@ public class StructuresSystemGroupIT {
     }
 
     @Test
-    public void checkUpdate() {
+    void checkUpdate() {
         // purpose
         //     test conditions for update system group
         //         not update
@@ -537,7 +537,7 @@ public class StructuresSystemGroupIT {
     }
 
     @Test
-    public void updateApprove() {
+    void updateApprove() {
         // purpose
         //     test update and approve system group
         //
@@ -585,7 +585,7 @@ public class StructuresSystemGroupIT {
     }
 
     @Test
-    public void updateCancel() {
+    void updateCancel() {
         // purpose
         //     test update and cancel system group
         //
@@ -635,7 +635,7 @@ public class StructuresSystemGroupIT {
     }
 
     @Test
-    public void updateReject() {
+    void updateReject() {
         // purpose
         //     test update and reject system group
         //
@@ -685,7 +685,7 @@ public class StructuresSystemGroupIT {
     }
 
     @Test
-    public void checkDelete() {
+    void checkDelete() {
         // purpose
         //     test conditions for delete system group
         //         not delete
@@ -767,7 +767,7 @@ public class StructuresSystemGroupIT {
     }
 
     @Test
-    public void deleteApprove() {
+    void deleteApprove() {
         // purpose
         //     test delete and approve system group
         //
@@ -814,7 +814,7 @@ public class StructuresSystemGroupIT {
     }
 
     @Test
-    public void deleteCancel() {
+    void deleteCancel() {
         // purpose
         //     test delete and cancel system group
         //
@@ -863,7 +863,7 @@ public class StructuresSystemGroupIT {
     }
 
     @Test
-    public void deleteReject() {
+    void deleteReject() {
         // purpose
         //     test delete and reject system group
         //
@@ -912,7 +912,7 @@ public class StructuresSystemGroupIT {
     }
 
     @Test
-    public void readSearchHistoryApprove() {
+    void readSearchHistoryApprove() {
         // purpose
         //     test read system group in various ways for create, approve
         //         search
@@ -986,7 +986,7 @@ public class StructuresSystemGroupIT {
     }
 
     @Test
-    public void readSearchHistoryCancel() {
+    void readSearchHistoryCancel() {
         // purpose
         //     test read system group in various ways for create, cancel
         //         search
@@ -1060,7 +1060,7 @@ public class StructuresSystemGroupIT {
     }
 
     @Test
-    public void readSearchHistoryReject() {
+    void readSearchHistoryReject() {
         // purpose
         //     test read system group in various ways for create, reject
         //         search
@@ -1134,7 +1134,7 @@ public class StructuresSystemGroupIT {
     }
 
     @Test
-    public void readSearchHistoryStatusLatest1() {
+    void readSearchHistoryStatusLatest1() {
         // purpose
         //     test read system group in various ways
         //         status
@@ -1235,7 +1235,7 @@ public class StructuresSystemGroupIT {
     }
 
     @Test
-    public void readSearchHistoryStatusLatest9() {
+    void readSearchHistoryStatusLatest9() {
         // purpose
         //     test read system group in various ways
         //         status
@@ -1404,7 +1404,7 @@ public class StructuresSystemGroupIT {
     }
 
     @Test
-    public void readSearchStatusDeletedChildren() {
+    void readSearchStatusDeletedChildren() {
         // purpose
         //     test read system group in various ways
         //         status
diff --git a/src/test/java/org/openepics/names/docker/StructuresSystemIT.java b/src/test/java/org/openepics/names/docker/StructuresSystemIT.java
index 66852a02425092dfea3df2efb32779b101fa04b8..3701d1c9cf488541e1c87c4283b95d840c132bc6 100644
--- a/src/test/java/org/openepics/names/docker/StructuresSystemIT.java
+++ b/src/test/java/org/openepics/names/docker/StructuresSystemIT.java
@@ -49,7 +49,7 @@ import org.testcontainers.junit.jupiter.Testcontainers;
  * @author Lars Johansson
  */
 @Testcontainers
-public class StructuresSystemIT {
+class StructuresSystemIT {
 
     // note
     //     StructureElement - when, who, comment - depend on requested or processed
@@ -96,7 +96,7 @@ public class StructuresSystemIT {
     }
 
     @Test
-    public void equivalenceMnemonic() {
+    void equivalenceMnemonic() {
         // purpose
         //     test mnemonic equivalence
         //
@@ -107,7 +107,7 @@ public class StructuresSystemIT {
     }
 
     @Test
-    public void checkCreate() {
+    void checkCreate() {
         // purpose
         //     test conditions for create system
         //         not create itself
@@ -178,7 +178,7 @@ public class StructuresSystemIT {
     }
 
     @Test
-    public void checkCreateMnemonic() {
+    void checkCreateMnemonic() {
         // purpose
         //     test conditions for create system
         //         not create itself
@@ -289,7 +289,7 @@ public class StructuresSystemIT {
     }
 
     @Test
-    public void createApprove() {
+     void createApprove() {
         // purpose
         //     test create and approve system
         //
@@ -339,7 +339,7 @@ public class StructuresSystemIT {
     }
 
     @Test
-    public void createCancel() {
+    void createCancel() {
         // purpose
         //     test create and cancel system
         //
@@ -389,7 +389,7 @@ public class StructuresSystemIT {
     }
 
     @Test
-    public void createReject() {
+    void createReject() {
         // purpose
         //     test create and reject system
         //
@@ -439,7 +439,7 @@ public class StructuresSystemIT {
     }
 
     @Test
-    public void checkUpdate() {
+    void checkUpdate() {
         // purpose
         //     test conditions for update system
         //         not update
@@ -531,7 +531,7 @@ public class StructuresSystemIT {
     }
 
     @Test
-    public void updateApprove() {
+    void updateApprove() {
         // purpose
         //     test update and approve system
         //
@@ -578,7 +578,7 @@ public class StructuresSystemIT {
     }
 
     @Test
-    public void updateCancel() {
+    void updateCancel() {
         // purpose
         //     test update and cancel system
         //
@@ -627,7 +627,7 @@ public class StructuresSystemIT {
     }
 
     @Test
-    public void updateReject() {
+    void updateReject() {
         // purpose
         //     test update and reject system
         //
@@ -676,7 +676,7 @@ public class StructuresSystemIT {
     }
 
     @Test
-    public void checkDelete() {
+    void checkDelete() {
         // purpose
         //     test conditions for delete system
         //         not delete
@@ -764,7 +764,7 @@ public class StructuresSystemIT {
     }
 
     @Test
-    public void deleteApprove() {
+    void deleteApprove() {
         // purpose
         //     test delete and approve system
         //
@@ -811,7 +811,7 @@ public class StructuresSystemIT {
     }
 
     @Test
-    public void deleteCancel() {
+    void deleteCancel() {
         // purpose
         //     test delete and cancel system
         //
@@ -860,7 +860,7 @@ public class StructuresSystemIT {
     }
 
     @Test
-    public void deleteReject() {
+    void deleteReject() {
         // purpose
         //     test delete and reject system
         //
@@ -909,7 +909,7 @@ public class StructuresSystemIT {
     }
 
     @Test
-    public void readSearchHistoryApprove() {
+    void readSearchHistoryApprove() {
         // purpose
         //     test read system in various ways for create, approve
         //         search
@@ -993,7 +993,7 @@ public class StructuresSystemIT {
     }
 
     @Test
-    public void readSearchHistoryCancel() {
+    void readSearchHistoryCancel() {
         // purpose
         //     test read system in various ways for create, cancel
         //         search
@@ -1077,7 +1077,7 @@ public class StructuresSystemIT {
     }
 
     @Test
-    public void readSearchHistoryReject() {
+    void readSearchHistoryReject() {
         // purpose
         //     test read system in various ways for create, reject
         //         search
@@ -1161,7 +1161,7 @@ public class StructuresSystemIT {
     }
 
     @Test
-    public void readSearchHistoryStatusLatest1() {
+    void readSearchHistoryStatusLatest1() {
         // purpose
         //     test read system in various ways
         //         status
@@ -1266,7 +1266,7 @@ public class StructuresSystemIT {
     }
 
     @Test
-    public void readSearchHistoryStatusLatest9() {
+    void readSearchHistoryStatusLatest9() {
         // purpose
         //     test read system in various ways
         //         status
@@ -1439,7 +1439,7 @@ public class StructuresSystemIT {
     }
 
     @Test
-    public void readSearchStatusDeletedChildren() {
+    void readSearchStatusDeletedChildren() {
         // purpose
         //     test read system in various ways
         //         status
diff --git a/src/test/java/org/openepics/names/docker/complex/NamesInstanceIndexIT.java b/src/test/java/org/openepics/names/docker/complex/NamesInstanceIndexIT.java
index 1da3e0c2d544a9d4accda9e98a6a2e911e7abe67..35278b96132ac33c52a1e35560851867960742a6 100644
--- a/src/test/java/org/openepics/names/docker/complex/NamesInstanceIndexIT.java
+++ b/src/test/java/org/openepics/names/docker/complex/NamesInstanceIndexIT.java
@@ -52,7 +52,7 @@ import org.testcontainers.junit.jupiter.Testcontainers;
  */
 @SuppressWarnings("unused")
 @Testcontainers
-public class NamesInstanceIndexIT {
+class NamesInstanceIndexIT {
 
     // note
     //     disciplines
@@ -536,7 +536,7 @@ public class NamesInstanceIndexIT {
     }
 
   @Test
-  public void checkCreateInstanceIndex_Cryo() {
+  void checkCreateInstanceIndex_Cryo() {
       // purpose
       //     test conditions for create name
       //         not create itself
@@ -675,7 +675,7 @@ public class NamesInstanceIndexIT {
   }
 
   @Test
-  public void checkCreateInstanceIndex_EMR() {
+  void checkCreateInstanceIndex_EMR() {
       // purpose
       //     test conditions for create name
       //         not create itself
@@ -814,7 +814,7 @@ public class NamesInstanceIndexIT {
   }
 
   @Test
-  public void checkCreateInstanceIndex_HVAC() {
+  void checkCreateInstanceIndex_HVAC() {
       // purpose
       //     test conditions for create name
       //         not create itself
@@ -953,7 +953,7 @@ public class NamesInstanceIndexIT {
   }
 
   @Test
-  public void checkCreateInstanceIndex_Proc() {
+  void checkCreateInstanceIndex_Proc() {
       // purpose
       //     test conditions for create name
       //         not create itself
@@ -1092,7 +1092,7 @@ public class NamesInstanceIndexIT {
   }
 
   @Test
-  public void checkCreateInstanceIndex_SC() {
+  void checkCreateInstanceIndex_SC() {
       // purpose
       //     test conditions for create name
       //         not create itself
@@ -1231,7 +1231,7 @@ public class NamesInstanceIndexIT {
   }
 
   @Test
-  public void checkCreateInstanceIndex_Vac() {
+  void checkCreateInstanceIndex_Vac() {
       // purpose
       //     test conditions for create name
       //         not create itself
@@ -1370,7 +1370,7 @@ public class NamesInstanceIndexIT {
   }
 
   @Test
-  public void checkCreateInstanceIndex_WtrC() {
+  void checkCreateInstanceIndex_WtrC() {
       // purpose
       //     test conditions for create name
       //         not create itself
@@ -1509,7 +1509,7 @@ public class NamesInstanceIndexIT {
   }
 
   @Test
-  public void checkCreateInstanceIndex_BMD() {
+  void checkCreateInstanceIndex_BMD() {
       // purpose
       //     test conditions for create name
       //         not create itself
diff --git a/src/test/java/org/openepics/names/docker/complex/StructuresCreateLevel3IT.java b/src/test/java/org/openepics/names/docker/complex/StructuresCreateLevel3IT.java
index 938ae980884d1690ea88d8e020229b16b0005492..aaa5f605e4c84d419919ddb7013e73e094b07d5c 100644
--- a/src/test/java/org/openepics/names/docker/complex/StructuresCreateLevel3IT.java
+++ b/src/test/java/org/openepics/names/docker/complex/StructuresCreateLevel3IT.java
@@ -48,7 +48,7 @@ import org.testcontainers.junit.jupiter.Testcontainers;
  * @author Lars Johansson
  */
 @Testcontainers
-public class StructuresCreateLevel3IT {
+class StructuresCreateLevel3IT {
 
     // note
     //     create in order to approve
@@ -266,7 +266,7 @@ public class StructuresCreateLevel3IT {
     }
 
     @Test
-    public void createSubsystem() {
+    void createSubsystem() {
         // purpose
         //     test create and approve subsystem
         //     all create, then all approve
@@ -325,7 +325,7 @@ public class StructuresCreateLevel3IT {
     }
 
     @Test
-    public void createDeviceType() {
+    void createDeviceType() {
         // purpose
         //     test create and approve device type
         //     all create, then all approve
diff --git a/src/test/java/org/openepics/names/util/EssNamingConventionTest.java b/src/test/java/org/openepics/names/util/EssNamingConventionTest.java
index 41ef7451f234190892b9ff0580e0d17ab6fc7664..89bd9c28c8fc2852316cf028b147cd0507252503 100644
--- a/src/test/java/org/openepics/names/util/EssNamingConventionTest.java
+++ b/src/test/java/org/openepics/names/util/EssNamingConventionTest.java
@@ -19,6 +19,7 @@ package org.openepics.names.util;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import org.junit.jupiter.api.AfterAll;
@@ -134,7 +135,7 @@ public class EssNamingConventionTest {
      * Test of equivalence class representative method.
      */
     @Test
-    public void equivalenceClassRepresentative() {
+    void equivalenceClassRepresentative() {
         assertEquals("RFQ-10:EMR-TT-1",  namingConvention.equivalenceClassRepresentative("RFQ-010:EMR-TT-001"));
         assertEquals("RFQ-10:EMR-TT-10", namingConvention.equivalenceClassRepresentative("RFQ-010:EMR-TT-010"));
         assertEquals("RFQ-10:EMR-TT-11", namingConvention.equivalenceClassRepresentative("RFQ-010:EMR-TT-011"));
@@ -186,7 +187,7 @@ public class EssNamingConventionTest {
      * Test of equivalence class representative method for similarity to <tt>1</tt>.
      */
     @Test
-    public void equivalenceClassRepresentativeSimilarTo1() {
+    void equivalenceClassRepresentativeSimilarTo1() {
         assertEquals(
                 namingConvention.equivalenceClassRepresentative(NUM_1),
                 namingConvention.equivalenceClassRepresentative(NUM_1));
@@ -202,16 +203,16 @@ public class EssNamingConventionTest {
         assertEquals(
                 namingConvention.equivalenceClassRepresentative(NUM_1),
                 namingConvention.equivalenceClassRepresentative("i"));
-        assertFalse(
-                namingConvention.equivalenceClassRepresentative(NUM_1).equals(
-                        namingConvention.equivalenceClassRepresentative("b")));
+        assertNotEquals(
+                namingConvention.equivalenceClassRepresentative(NUM_1),
+                namingConvention.equivalenceClassRepresentative("b"));
     }
 
     /**
      * Test of equivalence class representative method for similarity to <tt>0</tt>.
      */
     @Test
-    public void equivalenceClassRepresentativeSimilarTo0() {
+    void equivalenceClassRepresentativeSimilarTo0() {
         assertEquals(
                 namingConvention.equivalenceClassRepresentative(NUM_0),
                 namingConvention.equivalenceClassRepresentative("o"));
@@ -221,44 +222,44 @@ public class EssNamingConventionTest {
         assertEquals(
                 namingConvention.equivalenceClassRepresentative(NUM_0),
                 namingConvention.equivalenceClassRepresentative(NUM_0));
-        assertFalse(
-                namingConvention.equivalenceClassRepresentative(NUM_0).equals(
-                        namingConvention.equivalenceClassRepresentative("b")));
+        assertNotEquals(
+                namingConvention.equivalenceClassRepresentative(NUM_0),
+                namingConvention.equivalenceClassRepresentative("b"));
     }
 
     /**
      * Test of equivalence class representative method for similarity to <tt>V</tt>.
      */
     @Test
-    public void equivalenceClassRepresentativeSimilarToV() {
+    void equivalenceClassRepresentativeSimilarToV() {
         assertEquals(
                 namingConvention.equivalenceClassRepresentative("V"),
                 namingConvention.equivalenceClassRepresentative("v"));
         assertEquals(
                 namingConvention.equivalenceClassRepresentative("V"),
                 namingConvention.equivalenceClassRepresentative("V"));
-        assertFalse(
-                namingConvention.equivalenceClassRepresentative("V1").equals(
-                        namingConvention.equivalenceClassRepresentative("w1")));
-        assertFalse(
-                namingConvention.equivalenceClassRepresentative("V1").equals(
-                        namingConvention.equivalenceClassRepresentative("W1")));
-        assertFalse(
-                namingConvention.equivalenceClassRepresentative("V").equals(
-                        namingConvention.equivalenceClassRepresentative("w")));
-        assertFalse(
-                namingConvention.equivalenceClassRepresentative("V").equals(
-                        namingConvention.equivalenceClassRepresentative("W")));
-        assertFalse(
-                namingConvention.equivalenceClassRepresentative("V").equals(
-                        namingConvention.equivalenceClassRepresentative("b")));
+        assertNotEquals(
+                namingConvention.equivalenceClassRepresentative("V1"),
+                namingConvention.equivalenceClassRepresentative("w1"));
+        assertNotEquals(
+                namingConvention.equivalenceClassRepresentative("V1"),
+                namingConvention.equivalenceClassRepresentative("W1"));
+        assertNotEquals(
+                namingConvention.equivalenceClassRepresentative("V"),
+                namingConvention.equivalenceClassRepresentative("w"));
+        assertNotEquals(
+                namingConvention.equivalenceClassRepresentative("V"),
+                namingConvention.equivalenceClassRepresentative("W"));
+        assertNotEquals(
+                namingConvention.equivalenceClassRepresentative("V"),
+                namingConvention.equivalenceClassRepresentative("b"));
     }
 
     /**
      * Test of equivalence class representative method for lower and upper case characters.
      */
     @Test
-    public void equivalenceClassRepresentativeLowerAndUpperCaseCharacters() {
+    void equivalenceClassRepresentativeLowerAndUpperCaseCharacters() {
         assertEquals(
                 namingConvention.equivalenceClassRepresentative("tEsTS"),
                 namingConvention.equivalenceClassRepresentative("TeSts"));
@@ -268,7 +269,7 @@ public class EssNamingConventionTest {
      * Test of equivalence class representative method for zero prefixed number.
      */
     @Test
-    public void equivalenceClassRepresentativeZeroPrefixedNumber() {
+    void equivalenceClassRepresentativeZeroPrefixedNumber() {
         assertEquals(
                 namingConvention.equivalenceClassRepresentative("01"),
                 namingConvention.equivalenceClassRepresentative("001"));
@@ -284,7 +285,7 @@ public class EssNamingConventionTest {
      * Test of equivalence class representative method for zero after alpha character.
      */
     @Test
-    public void equivalenceClassRepresentativeZeroAfterAlphaCharacter() {
+    void equivalenceClassRepresentativeZeroAfterAlphaCharacter() {
         assertEquals(
                 namingConvention.equivalenceClassRepresentative("Sub0001"),
                 namingConvention.equivalenceClassRepresentative("Sub1"));
@@ -297,7 +298,7 @@ public class EssNamingConventionTest {
      * Test of equivalence class representative method for chained calls to get equivalence class.
      */
     @Test
-    public void equivalenceClassRepresentativeTwiceEquivalence() {
+    void equivalenceClassRepresentativeTwiceEquivalence() {
         // note that of 2 chained calls to equivalenceClassRepresentative, 2nd call may modify
         // <==> 2nd output not same as 1st output
         assertEquals(
@@ -314,7 +315,7 @@ public class EssNamingConventionTest {
      * Test of equivalence class representative method for device type.
      */
     @Test
-    public void equivalenceClassRepresentativeDeviceType() {
+    void equivalenceClassRepresentativeDeviceType() {
         // note handling of trailing zeroes
         assertEquals(ECAT10,   namingConvention.equivalenceClassRepresentative("ECATIO"));
         assertEquals("ECAT1",  namingConvention.equivalenceClassRepresentative("ECATI0"));
@@ -334,7 +335,7 @@ public class EssNamingConventionTest {
      * Test validity of instance index for device.
      */
     @Test
-    public void isInstanceIndexValid() {
+    void isInstanceIndexValid() {
         String conventionNameBase = SYS + "-" + SUB + ":" + DIS + "-" + DEV;
 
         assertFalse(namingConvention.isInstanceIndexValid(NULL),                                   NULL_NOT_OK);
@@ -406,7 +407,7 @@ public class EssNamingConventionTest {
      * Test validity of instance index for device.
      */
     @Test
-    public void isInstanceIndexValidOverride() {
+    void isInstanceIndexValidOverride() {
         // override - length, characters
 
         String conventionNameBase = SYS + "-" + SUB + ":" + DIS + "-" + DEV;
@@ -480,7 +481,7 @@ public class EssNamingConventionTest {
      * Test validity of instance index, for device.
      */
     @Test
-    public void isInstanceIndexValidPIDNumeric() {
+    void isInstanceIndexValidPIDNumeric() {
         // depend on discipline, device type
 
         // mnemonic path system structure
@@ -674,7 +675,7 @@ public class EssNamingConventionTest {
      * Test validity of instance index, for device.
      */
     @Test
-    public void isInstanceIndexValidPID() {
+    void isInstanceIndexValidPID() {
         // depend on discipline
 
         // mnemonic paths system structure and device structure
@@ -884,7 +885,7 @@ public class EssNamingConventionTest {
      * Test validity of instance index, for device.
      */
     @Test
-    public void isInstanceIndexValidPIDOverride() {
+    void isInstanceIndexValidPIDOverride() {
         // depend on discipline
         // override - length, characters
 
@@ -1095,7 +1096,7 @@ public class EssNamingConventionTest {
      * Test validity of mnemonic path.
      */
     @Test
-    public void isMnemonicPathValid() {
+    void isMnemonicPathValid() {
         assertFalse(namingConvention.isMnemonicPathValid(NULL));
         assertFalse(namingConvention.isMnemonicPathValid(EMPTY));
         assertFalse(namingConvention.isMnemonicPathValid(SPACE));
@@ -1116,7 +1117,7 @@ public class EssNamingConventionTest {
      * Test if mnemonic is required.
      */
     @Test
-    public void isMnemonicRequired() {
+    void isMnemonicRequired() {
         assertFalse(namingConvention.isMnemonicRequired(null));
 
         assertFalse(namingConvention.isMnemonicRequired(Type.SYSTEMGROUP));
@@ -1148,7 +1149,7 @@ public class EssNamingConventionTest {
      * Test validity of mnemonic for system group.
      */
     @Test
-    public void isSystemGroupValid(){
+    void isSystemGroupValid(){
         assertEquals(MnemonicValidation.VALID,                testSystemGroup(NULL));
         assertEquals(MnemonicValidation.VALID,                testSystemGroup(EMPTY));
         assertEquals(MnemonicValidation.NON_ACCEPTABLE_CHARS, testSystemGroup(SPACE));
@@ -1177,7 +1178,7 @@ public class EssNamingConventionTest {
      * Test validity of mnemonic for system.
      */
     @Test
-    public void isSystemValid() {
+    void isSystemValid() {
         assertEquals(MnemonicValidation.EMPTY,                testSystem(NULL));
         assertEquals(MnemonicValidation.EMPTY,                testSystem(EMPTY));
         assertEquals(MnemonicValidation.NON_ACCEPTABLE_CHARS, testSystem(SPACE));
@@ -1204,7 +1205,7 @@ public class EssNamingConventionTest {
      * Test validity of mnemonic for subsystem.
      */
     @Test
-    public void isSubsystemValid() {
+    void isSubsystemValid() {
         assertEquals(MnemonicValidation.EMPTY,                testSubsystem(NULL));
         assertEquals(MnemonicValidation.EMPTY,                testSubsystem(EMPTY));
         assertEquals(MnemonicValidation.NON_ACCEPTABLE_CHARS, testSubsystem(SPACE));
@@ -1231,7 +1232,7 @@ public class EssNamingConventionTest {
      * Test validity of mnemonic for discipline.
      */
     @Test
-    public void isDisciplineValid() {
+    void isDisciplineValid() {
         assertEquals(MnemonicValidation.EMPTY,                testDiscipline(NULL));
         assertEquals(MnemonicValidation.EMPTY,                testDiscipline(EMPTY));
         assertEquals(MnemonicValidation.NON_ACCEPTABLE_CHARS, testDiscipline(SPACE));
@@ -1256,7 +1257,7 @@ public class EssNamingConventionTest {
      * Test validity of mnemonic for device group.
      */
     @Test
-    public void isDeviceGroupValid() {
+    void isDeviceGroupValid() {
         assertEquals(MnemonicValidation.VALID,                testDeviceGroup(NULL));
         assertEquals(MnemonicValidation.VALID,                testDeviceGroup(EMPTY));
         assertEquals(MnemonicValidation.NON_ACCEPTABLE_CHARS, testDeviceGroup(SPACE));
@@ -1281,7 +1282,7 @@ public class EssNamingConventionTest {
      * Test validity of mnemonic for device type.
      */
     @Test
-    public void isDeviceTypeValid() {
+    void isDeviceTypeValid() {
         assertEquals(MnemonicValidation.EMPTY,                testDeviceType(NULL));
         assertEquals(MnemonicValidation.EMPTY,                testDeviceType(EMPTY));
         assertEquals(MnemonicValidation.NON_ACCEPTABLE_CHARS, testDeviceType(SPACE));
diff --git a/src/test/java/org/openepics/names/util/ExceptionUtilTest.java b/src/test/java/org/openepics/names/util/ExceptionUtilTest.java
index 65936990e3574c99f04e95a560654bd688067f90..dff4a8da58c671806da741f620c46624af2a7322 100644
--- a/src/test/java/org/openepics/names/util/ExceptionUtilTest.java
+++ b/src/test/java/org/openepics/names/util/ExceptionUtilTest.java
@@ -41,13 +41,13 @@ import org.openepics.names.service.exception.InputNotValidException;
  *
  * @see ExceptionUtil
  */
-public class ExceptionUtilTest {
+class ExceptionUtilTest {
 
     /**
      * Test of create data conflict exception.
      */
     @Test
-    public void createDataConflictException() {
+    void createDataConflictException() {
         DataConflictException exception = ExceptionUtil.createDataConflictException(null, null, null);
         assertNotNull(exception);
         assertNull(exception.getMessage());
@@ -60,7 +60,7 @@ public class ExceptionUtilTest {
      * Test of create data deleted exception.
      */
     @Test
-    public void createDataDeletedException() {
+    void createDataDeletedException() {
         DataDeletedException exception = ExceptionUtil.createDataDeletedException(null, null, null);
         assertNotNull(exception);
         assertEquals(null, exception.getMessage());
@@ -73,7 +73,7 @@ public class ExceptionUtilTest {
      * Test of create data exist exception.
      */
     @Test
-    public void createDataExistException() {
+    void createDataExistException() {
         DataExistException exception = ExceptionUtil.createDataExistException("1", "2", "3");
         assertNotNull(exception);
         assertEquals("1", exception.getMessage());
@@ -86,7 +86,7 @@ public class ExceptionUtilTest {
      * Test of create data not available exception.
      */
     @Test
-    public void createDataNotAvailableException() {
+    void createDataNotAvailableException() {
         DataNotAvailableException exception = ExceptionUtil.createDataNotAvailableException("1", "2", null);
         assertNotNull(exception);
         assertEquals("1", exception.getMessage());
@@ -99,7 +99,7 @@ public class ExceptionUtilTest {
      * Test of create data not correct exception.
      */
     @Test
-    public void createDataNotCorrectException() {
+    void createDataNotCorrectException() {
         DataNotCorrectException exception = ExceptionUtil.createDataNotCorrectException("1", null, "3");
         assertNotNull(exception);
         assertEquals("1", exception.getMessage());
@@ -112,7 +112,7 @@ public class ExceptionUtilTest {
      * Test of create data not found exception.
      */
     @Test
-    public void createDataNotFoundException() {
+    void createDataNotFoundException() {
         DataNotFoundException exception = ExceptionUtil.createDataNotFoundException("1", null, null);
         assertNotNull(exception);
         assertEquals("1", exception.getMessage());
@@ -125,7 +125,7 @@ public class ExceptionUtilTest {
      * Test of create data not valid exception.
      */
     @Test
-    public void createDataNotValidException() {
+    void createDataNotValidException() {
         DataNotValidException exception = ExceptionUtil.createDataNotValidException(null, "2", "3");
         assertNotNull(exception);
         assertEquals(null, exception.getMessage());
@@ -138,7 +138,7 @@ public class ExceptionUtilTest {
      * Test of create input not available exception.
      */
     @Test
-    public void createInputNotAvailableException() {
+    void createInputNotAvailableException() {
         InputNotAvailableException exception = ExceptionUtil.createInputNotAvailableException(null, "2", null);
         assertNotNull(exception);
         assertEquals(null, exception.getMessage());
@@ -151,7 +151,7 @@ public class ExceptionUtilTest {
      * Test of create input not correct exception.
      */
     @Test
-    public void createInputNotCorrectException() {
+    void createInputNotCorrectException() {
         InputNotCorrectException exception = ExceptionUtil.createInputNotCorrectException(null, null, "3");
         assertNotNull(exception);
         assertEquals(TextUtil.INPUT_NOT_CORRECT_FOR_FIELD, exception.getMessage());
@@ -164,7 +164,7 @@ public class ExceptionUtilTest {
      * Test of create input not valid exception.
      */
     @Test
-    public void createInputNotValidException() {
+    void createInputNotValidException() {
         InputNotValidException exception = ExceptionUtil.createInputNotValidException(null, null, null);
         assertNotNull(exception);
         assertEquals(null, exception.getMessage());
diff --git a/src/test/java/org/openepics/names/util/NameElementUtilTest.java b/src/test/java/org/openepics/names/util/NameElementUtilTest.java
index 3e91aa7d9fbceafeb88018b08199d27847743f7b..02d67ec284b073e7e25eb6a2839deae84477aa5e 100644
--- a/src/test/java/org/openepics/names/util/NameElementUtilTest.java
+++ b/src/test/java/org/openepics/names/util/NameElementUtilTest.java
@@ -34,13 +34,13 @@ import org.openepics.names.rest.beans.element.NameElement;
  *
  * @see NameElementUtil
  */
-public class NameElementUtilTest {
+class NameElementUtilTest {
 
     /**
      * Test of get name element for name.
      */
     @Test
-    public void getNameElement() {
+    void getNameElement() {
         NameElement nameElement = NameElementUtil.getNameElement(null);
         assertNull(nameElement);
 
@@ -68,7 +68,7 @@ public class NameElementUtilTest {
      * Test of get name element for content.
      */
     @Test
-    public void getNameElementContent() {
+    void getNameElementContent() {
         NameElement nameElement = NameElementUtil.getNameElement(
                 null,
                 null, null,
diff --git a/src/test/java/org/openepics/names/util/NameUtilTest.java b/src/test/java/org/openepics/names/util/NameUtilTest.java
index 99c666f7200c41f07ce1b72c269ea47baec289df..2c63e397f02907c9b95efe227c8013813d9da787 100644
--- a/src/test/java/org/openepics/names/util/NameUtilTest.java
+++ b/src/test/java/org/openepics/names/util/NameUtilTest.java
@@ -32,13 +32,13 @@ import org.openepics.names.repository.model.Name;
  *
  * @see NameUtil
  */
-public class NameUtilTest {
+class NameUtilTest {
 
     /**
      * Test of get level of system structure for name.
      */
     @Test
-    public void getLevelSystemStructure() {
+    void getLevelSystemStructure() {
         Name name = new Name();
         assertEquals(-1, NameUtil.getLevelSystemStructure(name));
 
@@ -82,7 +82,7 @@ public class NameUtilTest {
      * Test of get level of device structure for name.
      */
     @Test
-    public void getLevelDeviceStructure() {
+    void getLevelDeviceStructure() {
         Name name = new Name();
         assertEquals(-1, NameUtil.getLevelDeviceStructure(name));
 
diff --git a/src/test/java/org/openepics/names/util/NamingConventionUtilTest.java b/src/test/java/org/openepics/names/util/NamingConventionUtilTest.java
index b5a1d2d9ded874e19b98ee47b9817abe2d6942c3..9e1e1d0c898c452603e6e71b7f85564b5499a713 100644
--- a/src/test/java/org/openepics/names/util/NamingConventionUtilTest.java
+++ b/src/test/java/org/openepics/names/util/NamingConventionUtilTest.java
@@ -34,7 +34,7 @@ import org.openepics.names.repository.model.Discipline;
  *
  * @see NamingConventionUtil
  */
-public class NamingConventionUtilTest {
+class NamingConventionUtilTest {
 
     // conventionname_abc_def
     //     a - 1/0 - system group   or not
@@ -72,7 +72,7 @@ public class NamingConventionUtilTest {
      * Test of extraction of system group from convention name.
      */
     @Test
-    public void extractSystemGroup() {
+    void extractSystemGroup() {
         assertNull(NamingConventionUtil.extractSystemGroup(NULL));
         assertNull(NamingConventionUtil.extractSystemGroup(EMPTY));
         assertNull(NamingConventionUtil.extractSystemGroup(DUMMY));
@@ -97,7 +97,7 @@ public class NamingConventionUtilTest {
      * Test of extraction of system from convention name.
      */
     @Test
-    public void extractSystem() {
+    void extractSystem() {
         assertNull(NamingConventionUtil.extractSystem(NULL));
         assertNull(NamingConventionUtil.extractSystem(EMPTY));
         assertEquals(DUMMY,     NamingConventionUtil.extractSystem(DUMMY));
@@ -122,7 +122,7 @@ public class NamingConventionUtilTest {
      * Test of extraction of subsystem group from convention name.
      */
     @Test
-    public void extractSubsystem() {
+    void extractSubsystem() {
         assertNull(NamingConventionUtil.extractSubsystem(NULL));
         assertNull(NamingConventionUtil.extractSubsystem(EMPTY));
         assertNull(NamingConventionUtil.extractSubsystem(DUMMY));
@@ -147,7 +147,7 @@ public class NamingConventionUtilTest {
      * Test of extraction of discipline from convention name.
      */
     @Test
-    public void extractDiscipline() {
+    void extractDiscipline() {
         assertNull(NamingConventionUtil.extractDiscipline(NULL));
         assertNull(NamingConventionUtil.extractDiscipline(EMPTY));
         assertNull(NamingConventionUtil.extractDiscipline(DUMMY));
@@ -172,7 +172,7 @@ public class NamingConventionUtilTest {
      * Test of extraction of device type from convention name.
      */
     @Test
-    public void extractDeviceType() {
+    void extractDeviceType() {
         assertNull(NamingConventionUtil.extractDeviceType(NULL));
         assertNull(NamingConventionUtil.extractDeviceType(EMPTY));
         assertNull(NamingConventionUtil.extractDeviceType(DUMMY));
@@ -197,7 +197,7 @@ public class NamingConventionUtilTest {
      * Test of extraction of instance index from convention name.
      */
     @Test
-    public void extractInstanceIndex() {
+    void extractInstanceIndex() {
         assertNull(NamingConventionUtil.extractInstanceIndex(NULL));
         assertNull(NamingConventionUtil.extractInstanceIndex(EMPTY));
         assertNull(NamingConventionUtil.extractInstanceIndex(DUMMY));
@@ -222,7 +222,7 @@ public class NamingConventionUtilTest {
      * Test of extraction of mnemonic path for system structure from convention name.
      */
     @Test
-    public void extractMnemonicPathSystemStructure() {
+    void extractMnemonicPathSystemStructure() {
         assertEquals(NULL,               NamingConventionUtil.extractMnemonicPathSystemStructure(NULL));
         assertEquals(NULL,               NamingConventionUtil.extractMnemonicPathSystemStructure(EMPTY));
         assertEquals(DUMMY,              NamingConventionUtil.extractMnemonicPathSystemStructure(DUMMY));
@@ -248,7 +248,7 @@ public class NamingConventionUtilTest {
      * Test of extraction of mnemonic path for device structure from convention name.
      */
     @Test
-    public void extractMnemonicPathDeviceStructure() {
+    void extractMnemonicPathDeviceStructure() {
         assertEquals(NULL,          NamingConventionUtil.extractMnemonicPathDeviceStructure(NULL));
         assertEquals(NULL,          NamingConventionUtil.extractMnemonicPathDeviceStructure(EMPTY));
         assertEquals(NULL,          NamingConventionUtil.extractMnemonicPathDeviceStructure(DUMMY));
@@ -274,7 +274,7 @@ public class NamingConventionUtilTest {
      * Test to get index style from convention name.
      */
     @Test
-    public void getInstanceIndexStyleConventionName() {
+    void getInstanceIndexStyleConventionName() {
         assertEquals(NULL, NamingConventionUtil.getInstanceIndexStyle("Mech-TDS"));
         assertEquals(NULL, NamingConventionUtil.getInstanceIndexStyle("Cryo-TDS"));
 
@@ -303,7 +303,7 @@ public class NamingConventionUtilTest {
      * Test to get index style from discipline.
      */
     @Test
-    public void getInstanceIndexStyleDiscipline() {
+    void getInstanceIndexStyleDiscipline() {
         Discipline discipline = new Discipline();
 
         discipline.setMnemonic(NULL);
@@ -332,7 +332,7 @@ public class NamingConventionUtilTest {
      * Test to check if discipline is PID.
      */
     @Test
-    public void isDisciplinePID() {
+    void isDisciplinePID() {
         assertFalse(NamingConventionUtil.isDisciplinePID(NULL));
         assertFalse(NamingConventionUtil.isDisciplinePID(EMPTY));
         assertFalse(NamingConventionUtil.isDisciplinePID(DUMMY));
@@ -361,7 +361,7 @@ public class NamingConventionUtilTest {
      * Test to check if mnemonic path (device structure) is PID numeric.
      */
     @Test
-    public void isMnemonicPathPIDNumeric() {
+    void isMnemonicPathPIDNumeric() {
         assertFalse(NamingConventionUtil.isMnemonicPathDeviceStructurePIDNumeric(NULL));
         assertFalse(NamingConventionUtil.isMnemonicPathDeviceStructurePIDNumeric(EMPTY));
         assertFalse(NamingConventionUtil.isMnemonicPathDeviceStructurePIDNumeric(DUMMY));
@@ -390,7 +390,7 @@ public class NamingConventionUtilTest {
      * Test to check if convention name is offsite.
      */
     @Test
-    public void isOffsite() {
+    void isOffsite() {
         assertFalse(NamingConventionUtil.isOffsite(CONVENTIONNAME_010));
         assertFalse(NamingConventionUtil.isOffsite(CONVENTIONNAME_011));
 
@@ -411,7 +411,7 @@ public class NamingConventionUtilTest {
      * Test to check conversion of string (e.g. name) to mnemonic path.
      */
     @Test
-    public void string2MnemonicPath() {
+    void string2MnemonicPath() {
         String[] array = null;
 
         array = NamingConventionUtil.string2MnemonicPath(null);
diff --git a/src/test/java/org/openepics/names/util/StructureElementUtilTest.java b/src/test/java/org/openepics/names/util/StructureElementUtilTest.java
index d397454d4f5607008ee25d4e5139f64812478ac7..4aad2d9e67f7b0daf27c90ceeec361032b44c993 100644
--- a/src/test/java/org/openepics/names/util/StructureElementUtilTest.java
+++ b/src/test/java/org/openepics/names/util/StructureElementUtilTest.java
@@ -32,13 +32,13 @@ import org.openepics.names.rest.beans.element.StructureElement;
  *
  * @see StructureElementUtil
  */
-public class StructureElementUtilTest {
+class StructureElementUtilTest {
 
     /**
      * Test of get structure element for content.
      */
     @Test
-    public void getStructureElementContent() {
+    void getStructureElementContent() {
         StructureElement structureElement = StructureElementUtil.getStructureElement(
                 null,
                 null,
@@ -65,7 +65,7 @@ public class StructureElementUtilTest {
     }
 
     @Test
-    public void equals() {
+    void equals() {
         StructureElement se1 = new StructureElement();
         StructureElement se2 = new StructureElement();
 
diff --git a/src/test/java/org/openepics/names/util/ValidateUtilTest.java b/src/test/java/org/openepics/names/util/ValidateUtilTest.java
index 388724ddb68dd71a5886a3fc01910c086431b3e1..01c7b138afba7b7469e86f181d1787f23f79836c 100644
--- a/src/test/java/org/openepics/names/util/ValidateUtilTest.java
+++ b/src/test/java/org/openepics/names/util/ValidateUtilTest.java
@@ -34,13 +34,13 @@ import org.openepics.names.service.exception.InputNotAvailableException;
  *
  * @see ValidateUtil
  */
-public class ValidateUtilTest {
+class ValidateUtilTest {
 
     /**
      * Test of validate input comment.
      */
     @Test
-    public void validateInputCommentNull() {
+    void validateInputCommentNull() {
         try {
             ValidateUtil.validateInputComment(null);
             fail();
@@ -57,7 +57,7 @@ public class ValidateUtilTest {
      * Test of validate input comment.
      */
     @Test
-    public void validateInputCommentEmpty() {
+    void validateInputCommentEmpty() {
         try {
             ValidateUtil.validateInputComment("");
             fail();
@@ -74,7 +74,7 @@ public class ValidateUtilTest {
      * Test of validate input comment.
      */
     @Test
-    public void validateInputComment() {
+    void validateInputComment() {
         ValidateUtil.validateInputComment("asdf");
     }
 
@@ -82,7 +82,7 @@ public class ValidateUtilTest {
      * Test of validate input description.
      */
     @Test
-    public void validateInputDescriptionNull() {
+    void validateInputDescriptionNull() {
         try {
             ValidateUtil.validateInputDescription(null);
             fail();
@@ -99,7 +99,7 @@ public class ValidateUtilTest {
      * Test of validate input description.
      */
     @Test
-    public void validateInputDescriptionEmpty() {
+    void validateInputDescriptionEmpty() {
         try {
             ValidateUtil.validateInputDescription("");
             fail();
@@ -116,7 +116,7 @@ public class ValidateUtilTest {
      * Test of validate input description.
      */
     @Test
-    public void validateInputDescription() {
+    void validateInputDescription() {
         ValidateUtil.validateInputDescription("asdf");
     }
 
@@ -124,7 +124,7 @@ public class ValidateUtilTest {
      * Test of validate input mnemonic.
      */
     @Test
-    public void validateInputMnemonicNull() {
+    void validateInputMnemonicNull() {
         try {
             ValidateUtil.validateInputMnemonic(null);
             fail();
@@ -141,7 +141,7 @@ public class ValidateUtilTest {
      * Test of validate input mnemonic.
      */
     @Test
-    public void validateInputMnemonicEmpty() {
+    void validateInputMnemonicEmpty() {
         try {
             ValidateUtil.validateInputMnemonic("");
             fail();
@@ -158,7 +158,7 @@ public class ValidateUtilTest {
      * Test of validate input mnemonic.
      */
     @Test
-    public void validateInputMnemonic() {
+    void validateInputMnemonic() {
         ValidateUtil.validateInputMnemonic("asdf");
     }
 
@@ -166,7 +166,7 @@ public class ValidateUtilTest {
      * Test of validate input name.
      */
     @Test
-    public void validateInputNameNull() {
+    void validateInputNameNull() {
         try {
             ValidateUtil.validateInputName(null);
             fail();
@@ -183,7 +183,7 @@ public class ValidateUtilTest {
      * Test of validate input name.
      */
     @Test
-    public void validateInputNameEmpty() {
+    void validateInputNameEmpty() {
         try {
             ValidateUtil.validateInputName("");
             fail();
@@ -200,7 +200,7 @@ public class ValidateUtilTest {
      * Test of validate input name.
      */
     @Test
-    public void validateInputName() {
+    void validateInputName() {
         ValidateUtil.validateInputName("asdf");
     }
 
@@ -208,7 +208,7 @@ public class ValidateUtilTest {
      * Test of validate input type.
      */
     @Test
-    public void validateInputTypeNull() {
+    void validateInputTypeNull() {
         try {
             ValidateUtil.validateInputType(null);
             fail();
@@ -225,7 +225,7 @@ public class ValidateUtilTest {
      * Test of validate input type.
      */
     @Test
-    public void validateInputType() {
+    void validateInputType() {
         ValidateUtil.validateInputType(Type.SYSTEMGROUP);
         ValidateUtil.validateInputType(Type.SYSTEM);
         ValidateUtil.validateInputType(Type.SUBSYSTEM);
@@ -238,7 +238,7 @@ public class ValidateUtilTest {
      * Test of validate input uuid.
      */
     @Test
-    public void validateInputUuidNull() {
+    void validateInputUuidNull() {
         try {
             ValidateUtil.validateInputUuid(null);
             fail();
@@ -255,7 +255,7 @@ public class ValidateUtilTest {
      * Test of validate input uuid.
      */
     @Test
-    public void validateInputUuidEmpty() {
+    void validateInputUuidEmpty() {
         try {
             ValidateUtil.validateInputUuid("");
             fail();
@@ -270,7 +270,7 @@ public class ValidateUtilTest {
      * Test of validate input uuid.
      */
     @Test
-    public void validateInputUuid() {
+    void validateInputUuid() {
         ValidateUtil.validateInputUuid(UUID.randomUUID().toString());
     }
 
@@ -280,7 +280,7 @@ public class ValidateUtilTest {
      * Test of validate input read names.
      */
     @Test
-    public void validateInputReadNames() {
+    void validateInputReadNames() {
         ValidateUtil.validateNamesInputRead(
                 null, null, null,
                 null,
@@ -292,7 +292,7 @@ public class ValidateUtilTest {
      * Test of validate input create name element.
      */
     @Test
-    public void validateInputCreateNameElement() {
+    void validateInputCreateNameElement() {
         ValidateUtil.validateNameElementInputCreate(null);
     }
 
@@ -300,7 +300,7 @@ public class ValidateUtilTest {
      * Test of validate data create name element.
      */
     @Test
-    public void validateDataCreateNameElement() {
+    void validateDataCreateNameElement() {
         ValidateUtil.validateNameElementDataCreate(null, null, null, null, null);
     }
 
@@ -308,14 +308,14 @@ public class ValidateUtilTest {
      * Test of validate data create name.
      */
     @Test
-    public void validateDataCreateName() {
+    void validateDataCreateName() {
         ValidateUtil.validateNameDataCreate(null, null, null, null, null);
     }
     /**
      * Test of validate input update name element.
      */
     @Test
-    public void validateInputUpdateNameElement() {
+    void validateInputUpdateNameElement() {
         ValidateUtil.validateNameElementInputUpdate(null);
     }
 
@@ -323,7 +323,7 @@ public class ValidateUtilTest {
      * Test of validate data update name element.
      */
     @Test
-    public void validateDataUpdateNameElement() {
+    void validateDataUpdateNameElement() {
         ValidateUtil.validateNameElementDataUpdate(null, null, null, null, null);
     }
 
@@ -333,7 +333,7 @@ public class ValidateUtilTest {
      * Test of validate input read structures.
      */
     @Test
-    public void validateInputReadStructuresTypeNull() {
+    void validateInputReadStructuresTypeNull() {
         try {
             ValidateUtil.validateStructuresInputRead(
                     null, null, null, null, null,
@@ -351,7 +351,7 @@ public class ValidateUtilTest {
      * Test of validate input read structures.
      */
     @Test
-    public void validateInputReadStructures() {
+    void validateInputReadStructures() {
         ValidateUtil.validateStructuresInputRead(
                 Type.SYSTEMGROUP, null, null, null, null,
                 null,
@@ -388,7 +388,7 @@ public class ValidateUtilTest {
      * Test of validate data create structure element.
      */
     @Test
-    public void validateDataCreateStructureElement() {
+    void validateDataCreateStructureElement() {
         ValidateUtil.validateStructureElementDataCreate(null, null, null, null);
     }
 
@@ -396,7 +396,7 @@ public class ValidateUtilTest {
      * Test of validate data create structure.
      */
     @Test
-    public void validateDataCreateStructuret() {
+    void validateDataCreateStructuret() {
         ValidateUtil.validateStructureDataCreate(null, null, null, null, null);
     }
 
@@ -404,7 +404,7 @@ public class ValidateUtilTest {
      * Test of validate input update structure element.
      */
     @Test
-    public void validateInputUpdateStructureElement() {
+    void validateInputUpdateStructureElement() {
         ValidateUtil.validateStructureElementInputUpdate(null, null);
     }
 
@@ -412,7 +412,7 @@ public class ValidateUtilTest {
      * Test of validate data update structure element.
      */
     @Test
-    public void validateDataUpdateStructureElement() {
+    void validateDataUpdateStructureElement() {
         ValidateUtil.validateStructureElementDataUpdate(null, null, null, null);
     }