Determines whether the current fetch is incremental. Currently,
DIFFERENTIAL mode is unsupported and behavior is unspecified for feeds
that use this mode. There are discussions on the GTFS Realtime mailing
list around fully specifying the behavior of DIFFERENTIAL mode and the
documentation will be updated when those discussions are finalized.
Determines whether the current fetch is incremental. Currently, DIFFERENTIAL mode is unsupported and behavior is unspecified for feeds that use this mode. There are discussions on the GTFS Realtime mailing list around fully specifying the behavior of DIFFERENTIAL mode and the documentation will be updated when those discussions are finalized.