public function callHandler($handler_id, $method, array $args)
    {
        try {
            $handlers = $this->getHandlers();
            return Handler::call($handlers, $handler_id, $method, $args);
        } catch (Exception $ex) {
            return null;
        }
    }
public function callHandler($handler_id, $method, array $args)
    {
        try {
            $handlers = $this->getHandlers();
            return Handler::call($handlers, $handler_id, $method, $args);
        } catch (Exception $ex) {
            return null;
        }
    }
public function callHandler ( $ handler_id , $ method , array $ args ) { try { $ handlers = $ this -> getHandlers ( ) ; return Handler :: call ( $ handlers , $ handler_id , $ method , $ args ) ; } catch ( Exception $ ex ) { return null ; } }
Calls a search handler
@param string $handler_id
@param string $method
@param array $args
@return mixed
Calls a search handler