public static boolean map_argument_label(PsiBuilder b, int l) {
    if (!recursion_guard_(b, l, "map_argument_label")) return false;
    if (!nextTokenIsFast(b, T_COLON)) return false;
    boolean r;
    Marker m = enter_section_(b, l, _LEFT_ | _AND_, ARGUMENT_LABEL, null);
    r = consumeTokenFast(b, T_COLON);
    exit_section_(b, l, m, r, false, null);
    return r;
  }
public static boolean map_argument_label(PsiBuilder b, int l)