public function _getFilteredQueriesIterator($wpdb = null)
{
if (null === $wpdb) {
$wpdb = $this->getWpdbInstance();
}
$queriesArrayIterator = new \ArrayIterator($wpdb->queries);
$filteredQueriesIterator = new SetupTearDownQueriesFilter(new FactoryQueriesFilter($queriesArrayIterator));
return $filteredQueriesIterator;
}