/**
* Convenience method to add a multi delete query command
*
* If you need more control, like choosing a key for the command you need to
* create you own command instance and use the add method.
*
* @param array $queries
* @return Solarium_Query_Update Provides fluent interface
*/
public function addDeleteQueries($queries)
{
$delete = new Solarium_Query_Update_Command_Delete();
$delete->addQueries($queries);
return $this->add(null, $delete);
}