How to use javafx.scene.control

@Override
public String toString(Label object) {
  return object==null? "" : object.getText();
}
@Override

private void swapLabelsColor(Label lbl1, Label lbl2) {
  Paint color = lbl1.getTextFill();
  lbl1.setTextFill(lbl2.getTextFill());
  lbl2.setTextFill(color);
}

@Override
public void requestLayout() {
  if (performingLayout) {
    return;
  }
  super.requestLayout();
}

@Override
public Node createLabel() {
  final Label l = new Label(label);
  l.setTooltip( new Tooltip(tooltip) );
  return l;
}

  @Override
  protected void layoutChildren() {
    super.layoutChildren();
    if (itemChanged) {
      if (suggestionList.getItems().size() > 0) {
        suggestionList.getSelectionModel().select(0);
        suggestionList.scrollTo(0);
      }
      itemChanged = false;
    }
  }
};

  @Override
  public Label fromString(String string) {
    return new Label(string);
  }
});

private Object validateComboBox(Object text) {
  if (control instanceof ComboBox && ((ComboBox) control).isEditable()) {
    final String editorText = ((ComboBox<?>) control).getEditor().getText();
    text = editorText == null || editorText.isEmpty() ? null : text;
  }
  return text;
}

public void setToast(String toast) {
  this.toast.setText(toast);
}

public void setTypeId(PropertyTypeId typeId) {
  typeChoiceBox.getSelectionModel().select(typeId);
}

/**
 * Invalidates the info being displayed.
 */
private void invalidateInfo() {
  metricResultsListView.setItems(FXCollections.emptyObservableList());
  xpathAttributesListView.setItems(FXCollections.emptyObservableList());
  scopeHierarchyTreeView.setRoot(null);
}

private final void scrollToYear() {
  int yearIndex = Integer.parseInt(selectedYearLabel.getText()) - 1900 - 2;
  yearsListView.scrollTo(yearIndex >= 0 ? yearIndex : yearIndex + 2);
}

/**
 * {@inheritDoc}
 */
@Override
public void sort() {
  getSelectionModel().clearSelection();
  super.sort();
  if (itemWasSelected) {
    getSelectionModel().select(0);
  }
}

public void syncWithAutoUpdate() {
  if (!getPopup().isShowing() && getSkinnable().isShowing()) {
    // Popup was dismissed. Maybe user clicked outside or typed ESCAPE.
    // Make sure JFXColorPickerUI button is in sync.
    getSkinnable().hide();
  }
}

    private boolean showCloseButton() {
      return tab.isClosable() &&
          (getSkinnable().getTabClosingPolicy().equals(TabPane.TabClosingPolicy.ALL_TABS));
//                   ||
//                    getSkinnable().getTabClosingPolicy().equals(TabPane.TabClosingPolicy.SELECTED_TAB) && tab.isSelected());
    }

  @Override
  public StyleableProperty<Boolean> getStyleableProperty(ColorPicker n) {
    final JFXColorPickerSkin skin = (JFXColorPickerSkin) n.getSkin();
    return skin.colorLabelVisible;
  }
};

@Override
protected void layoutChildren(double contentX, double contentY, double contentWidth, double contentHeight) {
  scrollPane.resizeRelocate(contentX, contentY, contentWidth, contentHeight);
}

@Override
protected double computeMinHeight(double width) {
  return super.computePrefHeight(width);
}

  @Override
  protected Skin<?> createDefaultSkin() {
    return super.createDefaultSkin();
  }
}.createDefaultSkin();

@Override
public String toString(Label object) {
  return object==null? "" : object.getText();
}

public String getToast() {
  return toast.getText();
}