def __init__(self, response):
        """
        @param response: A C{bytes} object giving the value to return from
            C{render_GET}.
        """
        Resource.__init__(self)
        self._response = response

        @param response: A C{bytes} object giving the value to return from
            C{render_GET}.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/web/test/test_resource.py