public static boolean single_parameter_lambda_parameter_list(PsiBuilder b, int l) {
    if (!recursion_guard_(b, l, "single_parameter_lambda_parameter_list")) return false;
    boolean r;
    Marker m = enter_section_(b, l, _NONE_, PARAMETER_LIST, "<single parameter lambda parameter list>");
    r = single_parameter_lambda_parameter_list_0(b, l + 1);
    r = r && single_parameter_lambda_parameter(b, l + 1);
    exit_section_(b, l, m, r, false, null);
    return r;
  }
public static boolean single_parameter_lambda_parameter_list(PsiBuilder b, int l)