static boolean argument_list(PsiBuilder b, int l) {
    if (!recursion_guard_(b, l, "argument_list")) return false;
    boolean r, p;
    Marker m = enter_section_(b, l, _NONE_);
    r = consumeTokens(b, 1, LEFT_PAREN, RIGHT_PAREN);
    p = r; // pin = 1
    exit_section_(b, l, m, r, p, ShParser::argument_list_recover);
    return r || p;
  }
static boolean argument_list(PsiBuilder b, int l)