private UiMenuSpecifier buildMenu(String q = null) {
    new UiMenuSpecifier().ui {                          (1)
        menu CrewController.&index as MC
        menu CrewController.&listRoles as MC
        menu CrewController.&hierarchy as MC
        menuIcon ActionIcon.CONFIG_USER, this.&editUser as MC   (4)
        menuIcon ActionIcon.EXPORT_PDF, this.&downloadBinPdf as MC
        menuSearch this.&search as MethodClosure, q     (2)
        menuOptions(SupportedLanguage.fromContext())    (3)
    }
}