private void layoutParts() {
    drawerBox.getChildren().addAll(header, scrollPane);

    menuContainer.setFillWidth(true);

    header.setTop(backBtn);
    header.setCenter(companyLogo);

    getChildren().add(drawerBox);
  }
Defines the layout of all parts in the skin.
workbenchfx-core/src/main/java/com/dlsc/workbenchfx/view/controls/NavigationDrawerSkin.java