func (p *PuppetService) RoomMemberList(roomID string) ([]string, error) {
    log.Tracef("PuppetService RoomMemberList(%s)\n", roomID)
    response, err := p.grpcClient.RoomMemberList(context.Background(), &pbwechatypuppet.RoomMemberListRequest{
        Id: roomID,
    })