code: @Override
      public <E> List<E> getColumnsById(String schemaName, String joinTableName, String joinColumnName,
              String inverseJoinColumnName, Object parentId, Class columnJavaType)
      {
          return handler.getForeignKeysFromJoinTable(schemaName, joinTableName, parentId, inverseJoinColumnName);
      }
docs: /*
  (non-Javadoc)
  
  @see
  com.impetus.kundera.client.Client#getForeignKeysFromJoinTable(java.lang
  .String, java.lang.String, java.lang.String,
  com.impetus.kundera.metadata.model.EntityMetadata,
  com.impetus.kundera.persistence.handler.impl.EntitySaveGraph)