docs: async def start(self, remoteParameters):
          """
          Initiate connectivity checks.
  
          :param: remoteParameters: The :class:`RTCIceParameters` associated with
                                    the remote :class:`RTCIceTransport`.
          """
          if self.state == 'closed':
              raise InvalidStateError('RTCIceTransport is closed')
  
          # handle the case where start is already in progress
          if self.__start is not None:
              return await self.__start.wait()
          self.__start = asyncio.Event()
  
          self.__setState('checking')
          self._connection.remote_username = remoteParameters.usernameFragment
          self._connection.remote_password = remoteParameters.password
          try:
              await self._connection.connect()
          except ConnectionError:
              self.__setState('failed')
          else:
              self.__setState('completed')
          self.__start.set()