def options(self, request, response):
<EOL>response['<STR_LIT>'] = '<STR_LIT:U+002CU+0020>'.join(self.meta.http_allowed_methods)<EOL>response.status = http.client.OK<EOL>
Process an `OPTIONS` request.

        Used to initiate a cross-origin request. All handling specific to
        CORS requests is done on every request however this method also
        returns a list of available methods.