message: added in interface.
diff: @@ -57,6 +57,7 @@ interface IMetadataHelper {
  getMetaDataForDecorators(decorators: Array<string>): Array<{ target: Object, metadata: Array<MetaData> }>;
  getMetaDataForPropKey(target: Object, propertyKey?: string): Array<MetaData>;
  getMetaDataForPropKey(target: Object, propertyKey?: string, paramIndex?: number): Array<MetaData>;
  + getMetaDataFromName(modelName: string): Array<any>;
  refreshDerivedObjectsMetadata();
  getDescriptiveMetadata(type, baseRelMeta, recursionLevel?: number): any;
  }
  