// MemberAddAsLearner adds a new learner member into the cluster.
	MemberAddAsLearner(ctx context.Context, peerAddrs []string) (*clientv3.MemberAddResponse, error)

	// MemberRemove removes an existing member from the cluster.
	MemberRemove(ctx context.Context, id uint64) (*clientv3.MemberRemoveResponse, error)

	// MemberPromote promotes a member from raft learner (non-voting) to raft voting member.

func (f *fakeEtcdClient) MemberAddAsLearner(_ context.Context, peerAddrs []string) (*clientv3.MemberAddResponse, error) {
	return nil, errNotImplemented
}

// MemberRemove removes an existing member from the cluster.
func (f *fakeEtcdClient) MemberRemove(_ context.Context, id uint64) (*clientv3.MemberRemoveResponse, error) {
	return nil, errNotImplemented
}