public function getHandler($handler_id)
    {
        $handlers = $this->getHandlers();
        return empty($handlers[$handler_id]) ? array() : $handlers[$handler_id];
    }
public function getHandler($handler_id)
    {
        $handlers = $this->getHandlers();
        return empty($handlers[$handler_id]) ? array() : $handlers[$handler_id];
    }
public function getHandler ( $ handler_id ) { $ handlers = $ this -> getHandlers ( ) ; return empty ( $ handlers [ $ handler_id ] ) ? array ( ) : $ handlers [ $ handler_id ] ; }
Returns an installer handler
@param string $handler_id
@return array
Returns an installer handler