public static function dataCreateThroughMongoDB()
{
$id = new \MongoId();
$validRef = ['$ref' => 'test', '$id' => $id];
$object = new \stdClass();
$object->_id = $id;
$objectWithoutId = new \stdClass();
return ['simpleId' => [$validRef, $id], 'arrayWithIdProperty' => [$validRef, ['_id' => $id]], 'objectWithIdProperty' => [$validRef, $object], 'arrayWithoutId' => [null, []], 'objectWithoutId' => [['$ref' => 'test', '$id' => $objectWithoutId], $objectWithoutId]];
}