code: def get_service_for_handle(self, handle):
          
          for s in self.services.values():
              if s.start_handle <= handle and s.end_handle >= handle:
                  return s
  
          return None
docs: Given a characteristic handle, return the :class:`Service` object that
          the handle belongs to. 
  
          Args:
              handle (int): the characteristic handle
  
          Returns:
              None if no service matches the given handle, otherwise a :class:`Service` object.