Illuminate\Database\Query\Builder::forNestedWhere PHP Method

    public function forNestedWhere()
    {
        $query = $this->newQuery();
        return $query->from($this->from);
    }

 /**
  * Create a new query instance for nested where condition.
  *
  * @return \Illuminate\Database\Query\Builder 
  * @static 
  */
 public static function forNestedWhere()
 {
     return \Illuminate\Database\Query\Builder::forNestedWhere();
 }