new_contents: from busbus.provider import ProviderBase
  from busbus.provider.gtfs import GTFSMixin
  
  
  class LawrenceTransitProvider(GTFSMixin, ProviderBase):
      gtfs_url = ("http://lawrenceks.org/assets/gis/google-transit/"
                  "google_transit.zip")
  
      def __init__(self, engine=None):
          super(LawrenceTransitProvider, self).__init__(engine, self.gtfs_url)
  
subject: Add Lawrence Transit (KS) GTFS provider