@Override
    public JdbcTableHandle getTableHandle(ConnectorSession session, SchemaTableName tableName)
    {
        return jdbcMetadataCache.getTableHandle(session, tableName);
    }
@Test
    public void testGetTableHandle()
    {
        JdbcTableHandle tableHandle = metadata.getTableHandle(SESSION, new SchemaTableName("example", "numbers"));
        assertEquals(metadata.getTableHandle(SESSION, new SchemaTableName("example", "numbers")), tableHandle);
        assertNull(metadata.getTableHandle(SESSION, new SchemaTableName("example", "unknown")));
        assertNull(metadata.getTableHandle(SESSION, new SchemaTableName("unknown", "numbers")));
        assertNull(metadata.getTableHandle(SESSION, new SchemaTableName("unknown", "unknown")));
    }