code: function FeedHeader(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 FeedHeader.
  @memberof transit_realtime
  @interface IFeedHeader
  @property {string} gtfsRealtimeVersion FeedHeader gtfsRealtimeVersion
  @property {transit_realtime.FeedHeader.Incrementality|null} [incrementality] FeedHeader incrementality
  @property {number|Long|null} [timestamp] FeedHeader timestamp
   
  Constructs a new FeedHeader.
  @memberof transit_realtime
  @classdesc Represents a FeedHeader.
  @implements IFeedHeader
  @constructor
  @param {transit_realtime.IFeedHeader=} [properties] Properties to set