Javadoc
Indicates that no default agency id (see
GtfsReaderContext#getDefaultAgencyId() was specified for a particular
feed. Recall that
GtfsReader will attempt to fill in the
AgencyAndId#setAgencyId(String) agencyId value for all entities
loaded by the reader so as to make entity ids unique across feeds. For
entities such as
Route and
Trip, the agency id will be
resolved automatically to any referenced
Agency in the
Route.
However, for all other entities, we need some agency id. By default, the
Agency#getId() of the first
Agency loaded by the reader will
be used. However, you may also specify a default agency with a call to
GtfsReader#setDefaultAgencyId(String).