The source node in most cases contains the sample message as written by the developer. If it looks like a dot-delimitted string such as "form.label.firstname", then the developer has not provided a default message.

Personalization Personalizacja key: main__personalization Dashboard Pulpit key: main__personalization__dashboard Import Importuj key: main__personalization__import Models Modele key: main__personalization__models Scenarios Scenariusze key: main__personalization__scenarios Cancel Anuluj key: model_edit__sidebar_right__close Save Zapisz key: model_edit__sidebar_right__save Save and close Zapisz i zamknij key: model_edit__sidebar_right__save_and_close Trigger model build Trigger model build key: model_edit__sidebar_right__trigger_model_build Cancel Anuluj key: scenario_create__sidebar_right__cancel Create Utwórz key: scenario_create__sidebar_right__create-and-close Close Zamknij key: scenario_edit__sidebar_right__close Remove scenario Usuń scenariusz key: scenario_edit__sidebar_right__remove Reset settings Zresetuj ustawienia key: scenario_edit__sidebar_right__reset Save Zapisz key: scenario_edit__sidebar_right__save Save and close Zapisz i zamknij key: scenario_edit__sidebar_right__save_and_close