static boolean root(PsiBuilder b, int l) {
    if (!recursion_guard_(b, l, "root")) return false;
    boolean r;
    Marker m = enter_section_(b);
    r = root_0(b, l + 1);
    r = r && root_1(b, l + 1);
    exit_section_(b, m, null, r);
    return r;
  }
static boolean root(PsiBuilder b, int l)