public function getDescendantsAndSelf( $columns = ['*'] )
	{
		if ( is_array( $columns ) )
			return $this->descendantsAndSelf()->get( $columns );

		$arguments = func_get_args();

		$limit = intval( array_shift( $arguments ) );
		$columns = array_shift( $arguments ) ?: ['*'];

		return $this->descendantsAndSelf()->limitDepth( $limit )->get( $columns );
	}