const google.golang.org/protobuf/internal/genid.UninterpretedOption_NamePart_IsExtension_field_fullname

one use

	google.golang.org/protobuf/internal/genid (current package)
		descriptor_gen.go#L729: 	UninterpretedOption_NamePart_IsExtension_field_fullname protoreflect.FullName = "google.protobuf.UninterpretedOption.NamePart.is_extension"