[ACS-9736] Update audit model documentation and implement inheritance in AuditModelRegistry

repository/src/main/java/org/alfresco/repo/audit/model/AuditModelRegistry.java

@@ -59,7 +59,7 @@ public interface AuditModelRegistry
     public boolean isAuditEnabled();
 
     /**
-     * Determines whether audit values should be stored in database.
+     * Determines whether audit values should be stored in database. <code>True</code> by default if not changed by property.
      *
      * @return <code>true</code> if audit is enabled.
      */

repository/src/main/java/org/alfresco/repo/audit/model/AuditModelRegistryImpl.java

@@ -252,6 +252,9 @@ public class AuditModelRegistryImpl extends AbstractPropertyBackedBean implement
         return value != null && value.equalsIgnoreCase("true");
     }
 
+    /**
+     * {@inheritDoc}
+     */
     @Override
     public boolean isAuditingToDatabaseEnabled()
     {
@@ -259,6 +262,9 @@ public class AuditModelRegistryImpl extends AbstractPropertyBackedBean implement
         return value == null || value.equalsIgnoreCase("true");
     }
 
+    /**
+     * {@inheritDoc}
+     */
     @Override
     public boolean isAuditingToAuditStorageEnabled()
     {