def group_call(self, call_params):
        path = '/' + self.api_version + '/GroupCall/'
        method = 'POST'
        return self.request(path, method, call_params)
Helper method to add rdfvalues as GrrMessages for testing.
dataset/ETHPy150Open plivo/plivohelper-python/plivohelper.py/REST.group_call--crossover with--dataset/ETHPy150Open google/grr/grr/lib/hunts/results.py/HuntResultCollection.AddAsMessage