Behat\Testwork\Cli\Application::doRun PHP Method

    public function doRun(InputInterface $input, OutputInterface $output)
    {
        // xdebug's default nesting level of 100 is not enough
        if (extension_loaded('xdebug') && false === strpos(ini_get('disable_functions'), 'ini_set')) {
            $oldValue = ini_get('xdebug.max_nesting_level');
            if ($oldValue === false || $oldValue < 256) {
                ini_set('xdebug.max_nesting_level', 256);
            }
        }
        if ($input->hasParameterOption(array('--config-reference'))) {
            $input = new ArrayInput(array('--config-reference' => true));
        }
        if ($path = $input->getParameterOption(array('--config', '-c'))) {
            if (!is_file($path)) {
                throw new ConfigurationLoadingException("The requested config file does not exist");
            }
            $this->configurationLoader->setConfigurationFilePath($path);
        }
        $this->add($this->createCommand($input, $output));
        return parent::doRun($input, $output);
    }