def IsMember(self, member_id, group_id):
    uri = self._ServiceUrl('member', True, group_id, member_id, '')
    return self._IsExisted(uri)
Called with the data from a response _before_ it has been read from the socket.
dataset/ETHPy150Open acil-bwh/SlicerCIP/Scripted/attic/PicasaSnap/gdata/apps/groups/service.py/GroupsService.IsMember--crossover with--dataset/ETHPy150Open google/nogotofail/nogotofail/mitm/connection/handlers/base.py/BaseHandler.peek_response