static boolean else_branch(PsiBuilder b, int l) {
    if (!recursion_guard_(b, l, "else_branch")) return false;
    if (!nextTokenIs(b, KW_ELSE)) return false;
    boolean r, p;
    Marker m = enter_section_(b, l, _NONE_);
    r = consumeToken(b, KW_ELSE);
    p = r; // pin = 1
    r = r && report_error_(b, mb_nl(b, l + 1));
    r = p && branch(b, l + 1) && r;
    exit_section_(b, l, m, r, p, null);
    return r || p;
  }
static boolean else_branch(PsiBuilder b, int l)