etcdserver/etcdserverpb/gw/rpc.pb.gw.go
func RegisterWatchHandler(ctx context.Context, mux *runtime.ServeMux, conn *grpc.ClientConn) error {
	return RegisterWatchHandlerClient(ctx, mux, etcdserverpb.NewWatchClient(conn))
}
func RegisterWatchHandler(ctx context.Context, mux *runtime.ServeMux, conn *grpc.ClientConn) error {
	return RegisterWatchHandlerClient(ctx, mux, etcdserverpb.NewWatchClient(conn))
}
// RegisterWatchHandler registers the http handlers for service Watch to "mux".
// The handlers forward requests to the grpc endpoint over "conn".