code: def get_connection(self):
          
  
          klass = self.entities.keys()
          if not klass:
              message = 'No classed found. Did you add entities to the Seeder?'
              raise SeederException(message)
          klass = list(klass)[0]
  
          return klass.objects._db
docs: use the first connection available
          :rtype: Connection