const google.golang.org/protobuf/types/known/durationpb.invalidNil

3 uses

	google.golang.org/protobuf/types/known/durationpb (current package)
		duration.pb.go#L202: 	case invalidNil:
		duration.pb.go#L219: 	invalidNil
		duration.pb.go#L232: 		return invalidNil