Method execute

/**
 * Execute the application.
 *
 * @return  void
 *
 * @since   1.7.3
 */
public function execute()
{
    // Trigger the onBeforeExecute event.
    $this->triggerEvent('onBeforeExecute');
    // Perform application routines.
    $this->doExecute();
    // Trigger the onAfterExecute event.
    $this->triggerEvent('onAfterExecute');
    // If we have an application document object, render it.
    if ($this->document instanceof Document) {
        // Trigger the onBeforeRender event.
        $this->triggerEvent('onBeforeRender');
        // Render the application output.
        $this->render();
        // Trigger the onAfterRender event.
        $this->triggerEvent('onAfterRender');
    }
    // If gzip compression is enabled in configuration and the server is compliant, compress the output.
    if ($this->get('gzip') && !ini_get('zlib.output_compression') && ini_get('output_handler') !== 'ob_gzhandler') {
        $this->compress();
    }
    // Trigger the onBeforeRespond event.
    $this->triggerEvent('onBeforeRespond');
    // Send the application response.
    $this->respond();
    // Trigger the onAfterRespond event.
    $this->triggerEvent('onAfterRespond');
}