static boolean paren_list_tail(PsiBuilder b, int l, Parser _item) {
    if (!recursion_guard_(b, l, "paren_list_tail")) return false;
    if (!nextTokenIsFast(b, NL) &&
        !nextTokenIs(b, "", T_COMMA)) return false;
    boolean r, p;
    Marker m = enter_section_(b, l, _NONE_);
    r = mb_nl(b, l + 1);
    r = r && consumeToken(b, T_COMMA);
    p = r; // pin = 2
    r = r && paren_list_item(b, l + 1, _item);
    exit_section_(b, l, m, r, p, null);
    return r || p;
  }
static boolean paren_list_tail(PsiBuilder b, int l, Parser _item)