def METHOD_NAME(self, uri, http_method='GET', body=None,
                                   headers=None):
    """Extract response_type and route to the designated handler."""
    request = Request(
        uri, http_method=http_method, body=body, headers=headers)
    request.scopes = utils.scope_to_list(request.scope)
    response_type_handler = self.response_types.get(
        request.response_type, self.default_response_type_handler)
    return response_type_handler.METHOD_NAME(request)