code: function TimeRange(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 TimeRange.
  @memberof transit_realtime
  @interface ITimeRange
  @property {number|Long|null} [start] TimeRange start
  @property {number|Long|null} [end] TimeRange end
   
  Constructs a new TimeRange.
  @memberof transit_realtime
  @classdesc Represents a TimeRange.
  @implements ITimeRange
  @constructor
  @param {transit_realtime.ITimeRange=} [properties] Properties to set