@Override
  public Map<String, Map<String, String>> getOriginInstanceDataByUser() {
    return getInstanceDataByUser(originInstanceDefinition);
  }
Get persistence entities of the view instance.

@param viewDefinition   the view definition.
@return the mapping of entity class name to the class objects,
loaded by the classloader of view version.
ambari-server/src/main/java/org/apache/ambari/server/view/ViewDataMigrationContextImpl.java