processCurrentChange method
Applies, discards changes to current item
Implementation
void processCurrentChange(TranslationApplying applying) {
  switch (applying.type) {
    case TranslationApplyingType.applyAll:
      _applyCurrentChangeFull();
      break;
    case TranslationApplyingType.discardAll:
      _discardCurrentChangeFull();
      break;
    case TranslationApplyingType.selectTranslations:
      final languages = applying.selectedLanguages ?? [];
      _applyCurrentChangeForSelectedLanguages(languages);
      break;
    case TranslationApplyingType.cancel:
      return;
  }
}