code: function StopTimeUpdate(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 StopTimeUpdate.
  @memberof transit_realtime.TripUpdate
  @interface IStopTimeUpdate
  @property {number|null} [stopSequence] StopTimeUpdate stopSequence
  @property {string|null} [stopId] StopTimeUpdate stopId
  @property {transit_realtime.TripUpdate.IStopTimeEvent|null} [arrival] StopTimeUpdate arrival
  @property {transit_realtime.TripUpdate.IStopTimeEvent|null} [departure] StopTimeUpdate departure
  @property {transit_realtime.TripUpdate.StopTimeUpdate.ScheduleRelationship|null} [scheduleRelationship] StopTimeUpdate scheduleRelationship
   
  Constructs a new StopTimeUpdate.
  @memberof transit_realtime.TripUpdate
  @classdesc Represents a StopTimeUpdate.
  @implements IStopTimeUpdate
  @constructor
  @param {transit_realtime.TripUpdate.IStopTimeUpdate=} [properties] Properties to set