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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 _bind(self, _descriptor):
 """ Bind a ResponseObject to a given action descriptor. This updates the default HTTP response code and selects the appropriate content type and serializer for the response. """


        # If the method has a default code, use it
        self._defcode = getattr(_descriptor.method, '_wsgi_code', 200)

        # Set up content type and serializer
        self.content_type, self.serializer = _descriptor.serializer(self.req)