Doctrine\ODM\MongoDB\Query\Builder::insert PHP Method

    public function insert($documentName = null)
    {
        $this->setDocumentName($documentName);
        return parent::insert();
    }

 /**
  * Change the query type to insert and optionally set and change the class being queried.
  *
  * @param string $documentName
  * @return QueryProxy this instance
  */
 public function insert($documentName = null)
 {
     $this->queryChanged = true;
     return parent::insert($documentName);
 }