public static boolean relative_ref(PsiBuilder b, int l) {
    if (!recursion_guard_(b, l, "relative_ref")) return false;
    boolean r;
    Marker m = enter_section_(b, l, _NONE_, RELATIVE_REF, "<relative ref>");
    r = relative_part(b, l + 1);
    r = r && relative_ref_1(b, l + 1);
    r = r && relative_ref_2(b, l + 1);
    exit_section_(b, l, m, r, false, null);
    return r;
  }
public static boolean relative_ref(PsiBuilder b, int l)