new_contents: """Fetch Massacheusetts Bay Transportation Authority (Boston) feed."""
  import logging
  
  from FeedSource import FeedSource
  
  URL = 'http://www.mbta.com/uploadedfiles/MBTA_GTFS.zip'
  
  LOG = logging.getLogger(__name__)
  
  
  class Boston(FeedSource):
      """Fetch MBTA feed."""
      def __init__(self):
          super(Boston, self).__init__()
          self.urls = {'boston.zip': URL}
  
subject: Add MBTA (Boston)