public function newNestedSetQuery($excludeDeleted = true) {
    $builder = $this->newQuery($excludeDeleted)->orderBy($this->getQualifiedOrderColumnName());

    if ( $this->isScoped() ) {
      foreach($this->scoped as $scopeFld)
        $builder->where($scopeFld, '=', $this->$scopeFld);
    }

    return $builder;
  }