const google.golang.org/protobuf/reflect/protoreflect.GroupKind

57 uses

	google.golang.org/protobuf/reflect/protoreflect (current package)
		proto.go#L271: 	GroupKind    Kind = 10
		proto.go#L282: 		StringKind, BytesKind, MessageKind, GroupKind:
		proto.go#L326: 	case GroupKind:
		proto.go#L370: 	case GroupKind:

	google.golang.org/protobuf/encoding/protojson
		decode.go#L266: 	case protoreflect.MessageKind, protoreflect.GroupKind:
		decode.go#L523: 	case protoreflect.MessageKind, protoreflect.GroupKind:
		decode.go#L580: 	case protoreflect.MessageKind, protoreflect.GroupKind:
		encode.go#L339: 	case protoreflect.MessageKind, protoreflect.GroupKind:

	google.golang.org/protobuf/encoding/prototext
		decode.go#L213: 			if kind != protoreflect.MessageKind && kind != protoreflect.GroupKind && !tok.HasSeparator() {
		decode.go#L230: 			if kind != protoreflect.MessageKind && kind != protoreflect.GroupKind && !tok.HasSeparator() {
		decode.go#L264: 	case protoreflect.MessageKind, protoreflect.GroupKind:
		decode.go#L365: 	case protoreflect.MessageKind, protoreflect.GroupKind:
		decode.go#L445: 	case protoreflect.MessageKind, protoreflect.GroupKind:
		decode.go#L533: 			if kind := fd.MapValue().Kind(); (kind != protoreflect.MessageKind) && (kind != protoreflect.GroupKind) {
		decode.go#L559: 		case protoreflect.MessageKind, protoreflect.GroupKind:
		encode.go#L258: 	case protoreflect.MessageKind, protoreflect.GroupKind:

	google.golang.org/protobuf/internal/descfmt
		stringer.go#L193: 						case protoreflect.MessageKind, protoreflect.GroupKind:

	google.golang.org/protobuf/internal/encoding/tag
		tag.go#L102: 			f.L1.Kind = protoreflect.GroupKind
		tag.go#L126: 	if f.L1.Kind == protoreflect.GroupKind {
		tag.go#L155: 	case protoreflect.GroupKind:
		tag.go#L171: 	if fd.Kind() == protoreflect.GroupKind {

	google.golang.org/protobuf/internal/filedesc
		desc.go#L364: 	case protoreflect.StringKind, protoreflect.BytesKind, protoreflect.MessageKind, protoreflect.GroupKind:
		desc.go#L475: 	case protoreflect.StringKind, protoreflect.BytesKind, protoreflect.MessageKind, protoreflect.GroupKind:
		desc.go#L610: 	if fd.Kind() != protoreflect.GroupKind {
		desc_init.go#L483: 		xd.L1.Kind = protoreflect.GroupKind
		desc_lazy.go#L40: 			case protoreflect.MessageKind, protoreflect.GroupKind:
		desc_lazy.go#L43: 				if fd.L1.Kind == protoreflect.GroupKind && (fd.IsMap() || fd.IsMapEntry()) {
		desc_lazy.go#L68: 		case protoreflect.MessageKind, protoreflect.GroupKind:
		desc_lazy.go#L468: 		fd.L1.Kind = protoreflect.GroupKind
		desc_lazy.go#L478: 		case protoreflect.MessageKind, protoreflect.GroupKind:
		desc_lazy.go#L582: 		case protoreflect.MessageKind, protoreflect.GroupKind:
		presence.go#L24: 	case fd.Kind() == protoreflect.MessageKind || fd.Kind() == protoreflect.GroupKind:

	google.golang.org/protobuf/internal/filetype
		build.go#L222: 		case protoreflect.MessageKind, protoreflect.GroupKind:

	google.golang.org/protobuf/internal/impl
		codec_extension.go#L54: 	case protoreflect.MessageKind, protoreflect.GroupKind, protoreflect.EnumKind:
		codec_field_opaque.go#L30: 	case protoreflect.GroupKind:
		codec_field_opaque.go#L137: 	case protoreflect.GroupKind:
		codec_gen.go#L5723: 	protoreflect.GroupKind:    protowire.StartGroupType,
		codec_message_opaque.go#L72: 				fd.Kind() == protoreflect.GroupKind),
		codec_tables.go#L126: 		case protoreflect.GroupKind:
		codec_tables.go#L198: 	case fd.Kind() == protoreflect.GroupKind:
		codec_tables.go#L478: 		case protoreflect.GroupKind:
		codec_tables.go#L552: 		case protoreflect.GroupKind:
		convert.go#L139: 	case protoreflect.MessageKind, protoreflect.GroupKind:
		legacy_message.go#L332: 	if fd.Message() == nil && (fd.Kind() == protoreflect.MessageKind || fd.Kind() == protoreflect.GroupKind) {
		message_reflect.go#L306: 	if xd.Kind() != protoreflect.MessageKind && xd.Kind() != protoreflect.GroupKind && !xd.IsList() && !xd.IsMap() {
		validate.go#L123: 		case protoreflect.GroupKind:
		validate.go#L165: 		case protoreflect.GroupKind:
		validate.go#L215: 		case protoreflect.GroupKind:

	google.golang.org/protobuf/proto
		decode.go#L210: 	case protoreflect.GroupKind, protoreflect.MessageKind:
		decode.go#L239: 	case protoreflect.GroupKind, protoreflect.MessageKind:
		decode.go#L268: 			case protoreflect.GroupKind, protoreflect.MessageKind:
		decode.go#L293: 		case protoreflect.GroupKind, protoreflect.MessageKind:
		decode_gen.go#L180: 	case protoreflect.GroupKind:
		decode_gen.go#L583: 	case protoreflect.GroupKind:
		encode_gen.go#L37: 	protoreflect.GroupKind:    protowire.StartGroupType,
		encode_gen.go#L86: 	case protoreflect.GroupKind:
		size_gen.go#L50: 	case protoreflect.GroupKind:

The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)