)         case 00: try decoder.decodeSingularMessageField(value: &_storage._optionalNestedMessage)         case 00: try decoder.decodeSingularMessageField(value: &_storage._optionalForeignMessage)         case 00: try decoder.decodeSingularMessageField(value: &_storage._optionalImportMessage)         case 00: try decoder.decodeSingularEnumField(value: &_storage._optional