public function children( $model )
	{
		$query = $this->model->newQuery();

		$query->where( $this->model->getQualifiedParentColumnName(), '=', $model->getKey() );

		// We must also add the scoped column values to the query to compute valid
		// left and right indexes.
		foreach ( $this->scopedAttributes( $model ) as $fld => $value )
			$query->where( $this->qualify( $fld ), '=', $value );

		$query->orderBy( $this->model->getQualifiedLeftColumnName() );
		$query->orderBy( $this->model->getQualifiedRightColumnName() );
		$query->orderBy( $this->model->getQualifiedKeyName() );

		return $query->get();
	}