public function __debugInfo()
{
return ['collectionName' => $this->collectionName, 'databaseName' => $this->databaseName, 'manager' => $this->manager, 'readConcern' => $this->readConcern, 'readPreference' => $this->readPreference, 'typeMap' => $this->typeMap, 'writeConcern' => $this->writeConcern];
}