public static boolean type_parameter_list(PsiBuilder b, int l) {
    if (!recursion_guard_(b, l, "type_parameter_list")) return false;
    if (!nextTokenIsFast(b, T_LT)) return false;
    boolean r, p;
    Marker m = enter_section_(b, l, _NONE_, TYPE_PARAMETER_LIST, null);
    r = consumeTokenFast(b, T_LT);
    p = r; // pin = 1
    r = r && report_error_(b, mb_nl(b, l + 1));
    r = p && report_error_(b, type_parameters(b, l + 1)) && r;
    r = p && mb_nl_group(b, l + 1, T_GT_parser_) && r;
    exit_section_(b, l, m, r, p, null);
    return r || p;
  }
public static boolean type_parameter_list(PsiBuilder b, int l)