History { public void undoAll() { while (undo()) { } } History(); void attachChangeListener(Setting setting); void doWithoutListeners(Setting setting, Runnable action); boolean undo(); void undoAll(); boolean redo(); void redoAll(); void clear(boolean undoAll); boolean isUndoAvailable(); BooleanProperty undoAvailableProperty(); boolean isRedoAvailable(); BooleanProperty redoAvailableProperty(); ObservableList<Change> getChanges(); ReadOnlyObjectProperty<Change> currentChangeProperty(); boolean isListenerActive(); ReadOnlyBooleanProperty listenerActiveProperty(); void setListenerActive(boolean listenerActive);  }
@Test public void undoAll() { }