public boolean isExisted(final String actualTableName) {
        return actualTables.contains(actualTableName);
    }
@Test
    void assertActualTableNameNotExisted() {
        ShardingTable actual = new ShardingTable(new ShardingTableRuleConfiguration("LOGIC_TABLE", "ds${0..1}.table_${0..2}"), Arrays.asList("ds0", "ds1"), null);
        assertFalse(actual.isExisted("table_3"));
    }