code: function RunQueryRequest(properties) {
                      if (properties)
                          for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
                              if (properties[keys[i]] != null)
                                  this[keys[i]] = properties[keys[i]];
                  }
docs: Properties of a RunQueryRequest.
  @memberof google.firestore.v1
  @interface IRunQueryRequest
  @property {string|null} [parent] RunQueryRequest parent
  @property {google.firestore.v1.IStructuredQuery|null} [structuredQuery] RunQueryRequest structuredQuery
  @property {Uint8Array|null} [transaction] RunQueryRequest transaction
  @property {google.firestore.v1.ITransactionOptions|null} [newTransaction] RunQueryRequest newTransaction
  @property {google.protobuf.ITimestamp|null} [readTime] RunQueryRequest readTime
   
  Constructs a new RunQueryRequest.
  @memberof google.firestore.v1
  @classdesc Represents a RunQueryRequest.
  @implements IRunQueryRequest
  @constructor
  @param {google.firestore.v1.IRunQueryRequest=} [properties] Properties to set