const google.golang.org/protobuf/encoding/protowire.FirstReservedNumber

3 uses

	google.golang.org/protobuf/encoding/protowire (current package)
		wire.go#L25: 	FirstReservedNumber   Number = 19000
		wire.go#L37: 	return MinValidNumber <= n && n < FirstReservedNumber || LastReservedNumber < n && n <= MaxValidNumber

	google.golang.org/protobuf/reflect/protodesc
		desc_validate.go#L235: 		if n := x.Number(); n < 0 || (protowire.FirstReservedNumber <= n && n <= protowire.LastReservedNumber) {