github.com/golang/protobuf/proto.RequiredNotSetError.err (field)

4 uses

	github.com/golang/protobuf/proto (current package)
		proto.go#L108: 	err error
		proto.go#L112: 	if e.err != nil {
		proto.go#L113: 		return e.err.Error()
		proto.go#L123: 		return &RequiredNotSetError{err: err}