public function find($collectionName, $filter = [], $sort = [], $limit = 0, $skip = 0, array $options = [])
{
$options += ['limit' => $limit, 'skip' => $skip, 'sort' => $sort];
$result = $this->bridge->find($this->cName($collectionName), $filter, $options)->toArray();
$data = [];
/* @var $r BSONDocument */
foreach ($result as $r) {
$data[] = iterator_to_array($r->getIterator());
}
return $data;
}