@HighFrequencyInvocation
    public Optional<EncryptTable> findEncryptTable(final String tableName) {
        return Optional.ofNullable(tables.get(tableName));
    }
@Test
    void assertFindEncryptTable() {
        assertTrue(new EncryptRule("foo_db", createEncryptRuleConfiguration()).findEncryptTable("t_encrypt").isPresent());
    }