google.golang.org/grpc/credentials/alts/internal/proto/grpc_gcp.NextHandshakeMessageReq.XXX_Merge (method)

one use

	google.golang.org/grpc/credentials/alts/internal/proto/grpc_gcp (current package)
		handshaker.pb.go#L540: func (m *NextHandshakeMessageReq) XXX_Merge(src proto.Message) {