# Pastebin 9RbQkiPN
    def register_uri(self, method, uri, request_headers=None,
                     complete_qs=False, **kwargs):
        key = '{method}:{uri}'.format(method=method, uri=uri)
        register = key not in self._uri_registry
        request_headers = request_headers or {}

        # Construct the response_list form kwargs
        response_list = kwargs.get('response_list', [kwargs])
        for response in response_list:
            validate = response.pop('validate', {})
            # Fix headers to ensure application/json if not set
            headers = structures.CaseInsensitiveDict(
                response.pop('headers', {}))

            if 'content-type' not in headers:
                headers[u'content-type'] = 'application/json'
            response['headers'] = headers
            self._uri_registry.setdefault(key, []).append(response)

            self.calls += [
                dict(
                    method=method,
                    url=uri, **validate)
            ]

        if register:
            self.adapter.register_uri(
                method, uri, request_headers=request_headers,
                complete_qs=complete_qs, response_list=response_list)