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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:
 async def accept( self, headers: Optional[Union[dict, CIMultiDict, Headers]] = None, subprotocol: Optional[str] = None, ) -> None: """Manually chose to accept the websocket connection. Arguments: headers: Additional headers to send with the acceptance response. subprotocol: The chosen subprotocol, optional. """

        if headers is None:
            headers_ = Headers()
        else:
            headers_ = Headers(headers)
        await self._accept(headers_, subprotocol)