public final WorkbenchBuilder navigationDrawer(NavigationDrawer navigationDrawer) {
            this.navigationDrawer = navigationDrawer;
            return this;
        }
Defines which navigation drawer should be shown.

@param navigationDrawer to be shown as the navigation drawer
@return builder for chaining
@implNote Use this to replace the navigation drawer, which is displayed when pressing the
menu icon, with your own implementation. To access the {@link MenuItem}s, use
{@link Workbench#getNavigationDrawerItems()}.
workbenchfx-core/src/main/java/com/dlsc/workbenchfx/Workbench.java