google.golang.org/protobuf/internal/impl.placeholderEnumValues.ByNumber (method, view implemented interface methods)

one use

	google.golang.org/protobuf/internal/impl (current package)
		legacy_message.go#L365: func (placeholderEnumValues) ByNumber(n protoreflect.EnumNumber) protoreflect.EnumValueDescriptor {