Finish filling the instance's response object so it's ready to be
        served to the client. This includes converting the body_raw property
        to the content type requested by the user if necessary.

def convert_response(self):
        """Finish filling the instance's response object so it's ready to be
        served to the client. This includes converting the body_raw property
        to the content type requested by the user if necessary.
        """
        if hasattr(self.response, 'body_raw'):
            if self.response.body_raw is not None:
                to_type = re.sub('[^a-zA-Z_]', '_', self.type)
                to_type_method = 'to_' + to_type
                if hasattr(self, to_type_method):
                    self.response.body = getattr(self, to_type_method)(
                        self.response.body_raw)
            del self.response.body_raw