'Send a grade back to consumer'

def _send_lti2_outcome(self):

    payload = textwrap.dedent('\n                                {{\n                                    "@context"    :    "http://purl.imsglobal.org/ctx/lis/v2/Result",\n                                    "@type"    :    "Result",\n                                    "resultScore"    :    {score},\n                                    "comment"    :    "This    is    awesome."\n                                }}\n                                ')
    data = payload.format(score=0.8)
    return self._send_lti2(data)
