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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def read_until(self, delimiter: bytes, max_bytes: int = None) -> Awaitable[bytes]: """Asynchronously read until we have found the given delimiter. The result includes all the data read including the delimiter. If ``max_bytes`` is not None, the connection will be closed if more than ``max_bytes`` bytes have been read and the delimiter is not found. .. versionchanged:: 4.0 Added the ``max_bytes`` argument. The ``callback`` argument is now optional and a `.Future` will be returned if it is omitted. .. versionchanged:: 6.0 The ``callback`` argument was removed. Use the returned `.Future` instead. """

        future = self._start_read()
        self._read_delimiter = delimiter
        self._read_max_bytes = max_bytes
        try:
            self._try_inline_read()
        except UnsatisfiableReadError as e:
            # Handle this the same way as in _handle_events.
            gen_log.info("Unsatisfiable read, closing connection: %s" % e)
            self.close(exc_info=e)
            return future
        except:
            future.add_done_callback(lambda f: f.exception())
            raise
        return future