/*      fetch_hash(with_table=false) */
static VALUE fetch_hash(int argc, VALUE* argv, VALUE obj)
{
    VALUE with_table;
    check_free(obj);
    rb_scan_args(argc, argv, "01", &with_table);
    if (with_table == Qnil)
        with_table = Qfalse;
    return fetch_hash2(obj, with_table);
}