message: added Query interface to backend
diff: @@ -230,11 +230,15 @@ interface Request {
  updates?: AnyDocumentData[];
  ids?: string[];
  parent?: Document<any, any>;
  - query?: object;
  + query?: Query;
  options?: RequestOptions;
  pack?: string;
  }
  +export interface Query {
  + _id: string;
  +}
  +
  interface RequestOptions {
  index?: boolean;
  broadcast?: boolean;
  