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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 write_response( self, status_code: Union[int, constants.HttpStatusCode], *, headers: Optional[_HeaderType]=None ) -> "writers.HttpResponseWriter": """ Write a response to the client. """

        self._writer = self.__delegate.write_response(
            constants.HttpStatusCode(status_code),
            headers=headers)

        return self._writer