FactoryGirl\Provider\Doctrine\ORM\QueryBuilder::create PHP Method

    public static function create(EntityManager $em)
    {
        return new static($em);
    }

 /**
  * Create a query builder. Override this in a child class to create a
  * builder of the appropriate type.
  * 
  * @return QueryBuilder
  */
 protected function getBaseQueryBuilder()
 {
     return QueryBuilder::create($this->_em);
 }