go version 1.15
refer to web list :
https://github.com/protocolbuffers/protobuf-go
https://developers.google.com/protocol-buffers/docs/gotutorial
https://github.com/protocolbuffers/protobuf
https://github.com/protocolbuffers/protobuf/tree/main/examples
https://pkg.go.dev/google.golang.org/protobuf/cmd/protoc-gen-go
cmd