diff --git a/annotation/src/main/java/lcsb/mapviewer/annotation/services/MiriamConnectorImpl.java b/annotation/src/main/java/lcsb/mapviewer/annotation/services/MiriamConnectorImpl.java
index f60eb7ad87da207d084a55c54a2f0c2fed0c6d22..fcf345ef25ea6ea9c898b2fe16b20de7fd018877 100644
--- a/annotation/src/main/java/lcsb/mapviewer/annotation/services/MiriamConnectorImpl.java
+++ b/annotation/src/main/java/lcsb/mapviewer/annotation/services/MiriamConnectorImpl.java
@@ -83,8 +83,8 @@ public class MiriamConnectorImpl extends CachableInterface implements MiriamConn
   public String getUrlString(final MiriamData miriamData) {
     if (miriamData.getDataType() == null) {
       throw new InvalidArgumentException("Data type cannot be empty.");
-    } else if (miriamData.getDataType().getUris().size() == 0) {
-      throw new InvalidArgumentException("Url for " + miriamData.getDataType() + " cannot be retreived.");
+    } else if (miriamData.getDataType().getUris().isEmpty()) {
+      throw new InvalidArgumentException("Url for " + miriamData.getDataType() + " cannot be retrieved.");
     }
     String query = LINK_DB_PREFIX + miriamData.getDataType().getUris().get(0) + "\n" + miriamData.getResource();
     String result = getCacheValue(query);
@@ -162,8 +162,7 @@ public class MiriamConnectorImpl extends CachableInterface implements MiriamConn
    * @param string identifier in the format NAME:IDENTIFIER. Where NAME is the name
    *               from {@link MiriamType#getCommonName()} and IDENTIFIER is resource
    *               identifier.
-   * @return <code>true</code> if identifier can be transformed into
-   * {@link MiriamData}
+   * @return <code>true</code> if identifier can be transformed into  {@link MiriamData}
    */
   @Override
   public boolean isValidIdentifier(final String string) {
@@ -179,8 +178,7 @@ public class MiriamConnectorImpl extends CachableInterface implements MiriamConn
    * Checks if {@link MiriamType} is valid.
    *
    * @param type type to be checked
-   * @return <code>true</code> if {@link MiriamType} is valid, <code>false</code>
-   * otherwise
+   * @return <code>true</code> if {@link MiriamType} is valid, <code>false</code> otherwise
    */
   @Override
   public boolean isValidMiriamType(final MiriamType type) {
diff --git a/converter-SBGNML/src/test/java/lcsb/mapviewer/converter/model/sbgnml/SbgnmlXmlExporterTest.java b/converter-SBGNML/src/test/java/lcsb/mapviewer/converter/model/sbgnml/SbgnmlXmlExporterTest.java
index 2b34837e9dd83824f21f9fe1aac7fb1fb67e4461..34655cfe5df8cc06dfee66b6c0759707eb78eb81 100644
--- a/converter-SBGNML/src/test/java/lcsb/mapviewer/converter/model/sbgnml/SbgnmlXmlExporterTest.java
+++ b/converter-SBGNML/src/test/java/lcsb/mapviewer/converter/model/sbgnml/SbgnmlXmlExporterTest.java
@@ -172,7 +172,7 @@ public class SbgnmlXmlExporterTest extends SbgnmlTestFunctions {
 
     assertTrue(SbgnUtil.isValid(tempFile));
   }
-  isDescribedBy
+
   @Test
   public void importExportZ() throws Exception {
     Compartment compartment = createCompartment();
diff --git a/model/src/main/java/lcsb/mapviewer/model/map/MiriamType.java b/model/src/main/java/lcsb/mapviewer/model/map/MiriamType.java
index 9d9bb94a7da90418a643685b1f6d0a9f08d3e339..ce6428dd066b246d9d00f121c2c6cda15809ef3f 100644
--- a/model/src/main/java/lcsb/mapviewer/model/map/MiriamType.java
+++ b/model/src/main/java/lcsb/mapviewer/model/map/MiriamType.java
@@ -6700,7 +6700,7 @@ public enum MiriamType {
    * @param uris               {@link #uris}
    * @param classes            {@link #validClass}
    * @param registryIdentifier {@link #registryIdentifier}
-   * @param requiredClasses    {@link #requiredClasses}
+   * @param requiredClasses    {@link #requiredClass}
    */
   MiriamType(final String commonName, final String dbHomePage, final String[] uris, final Class<?>[] classes, final String registryIdentifier,
              final Class<?>[] requiredClasses, final String namespace, final String exampleIdentifier) {
@@ -6772,8 +6772,7 @@ public enum MiriamType {
    * @param generalIdentifier identifier in the format NAME:IDENTIFIER. Where NAME is the name
    *                          from {@link MiriamType#commonName} and IDENTIFIER is resource
    *                          identifier.
-   * @return {@link MiriamData} representing generalIdentifier, when identifier is
-   * invalid InvalidArgumentException is thrown
+   * @return {@link MiriamData} representing generalIdentifier, when identifier is invalid InvalidArgumentException is thrown
    */
   public static MiriamData getMiriamDataFromIdentifier(final String generalIdentifier) {
     int index = generalIdentifier.indexOf(":");
diff --git a/pathvisio/src/main/java/lcsb/mapviewer/wikipathway/model/biopax/BiopaxFactory.java b/pathvisio/src/main/java/lcsb/mapviewer/wikipathway/model/biopax/BiopaxFactory.java
index 6b289f3310ff3d1dd722edb3b666040d6d172ccd..7702778bf162dff21ee42b2243554dc031f91923 100644
--- a/pathvisio/src/main/java/lcsb/mapviewer/wikipathway/model/biopax/BiopaxFactory.java
+++ b/pathvisio/src/main/java/lcsb/mapviewer/wikipathway/model/biopax/BiopaxFactory.java
@@ -29,7 +29,7 @@ public class BiopaxFactory {
    */
   public MiriamData createMiriamData(final BiopaxPublication publication) {
     if ("PubMed".equals(publication.getDb())) {
-      if (publication.getId() == null || publication.getId().equals("")) {
+      if (publication.getId() == null || publication.getId().isEmpty()) {
         return null;
       } else {
         if (StringUtils.isNumeric(publication.getId().trim())) {
@@ -50,8 +50,7 @@ public class BiopaxFactory {
    * @param biopaxData      {@link BiopaxData} where annotations are stored
    * @param biopaxReference list of references (to data in {@link BiopaxData}) that we want to
    *                        convert into {@link MiriamData}
-   * @return list of {@link MiriamData} that are referenced in {@link BiopaxData}
-   * with identifier given in biopaxReference.
+   * @return list of {@link MiriamData} that are referenced in {@link BiopaxData} with identifier given in biopaxReference.
    */
   public Collection<MiriamData> getMiriamData(final BiopaxData biopaxData, final Collection<String> biopaxReference) {
     List<MiriamData> result = new ArrayList<>();