/**
  * @return null|\TYPO3\CMS\Install\Configuration\AbstractPreset
  * @throws \TYPO3\CMS\Install\Configuration\Exception
  */
 public function isDevelopPresetActive()
 {
     $features = $this->featureManager->getInitializedFeatures(array());
     /** @var \TYPO3\CMS\Install\Configuration\Context\ContextFeature $contextPreset */
     $contextFeature = NULL;
     foreach ($features as $feature) {
         if ($feature instanceof \TYPO3\CMS\Install\Configuration\Context\ContextFeature) {
             $contextFeature = $feature;
             continue;
         }
     }
     if ($contextFeature === NULL) {
         return NULL;
     }
     $activePreset = NULL;
     $presets = $contextFeature->getPresetsOrderedByPriority();
     foreach ($presets as $preset) {
         /** @var \TYPO3\CMS\Install\Configuration\AbstractPreset $preset */
         if ($preset->isActive()) {
             $activePreset = $preset;
             continue;
         }
     }
     if ($activePreset->getName() === 'Development') {
         return true;
     }
     return false;
 }
 /**
  * Configure selected feature presets to be active
  *
  * @return \TYPO3\CMS\Install\Status\StatusInterface
  */
 protected function activate()
 {
     $configurationValues = $this->featureManager->getConfigurationForSelectedFeaturePresets($this->postValues['values']);
     if (!empty($configurationValues)) {
         $this->configurationManager->setLocalConfigurationValuesByPathValuePairs($configurationValues);
         /** @var $message \TYPO3\CMS\Install\Status\StatusInterface */
         $message = $this->objectManager->get(\TYPO3\CMS\Install\Status\OkStatus::class);
         $message->setTitle('Configuration written');
         $messageBody = array();
         foreach ($configurationValues as $configurationKey => $configurationValue) {
             $messageBody[] = '\'' . $configurationKey . '\' => \'' . $configurationValue . '\'';
         }
         $message->setMessage(implode(LF, $messageBody));
     } else {
         /** @var $message \TYPO3\CMS\Install\Status\StatusInterface */
         $message = $this->objectManager->get(\TYPO3\CMS\Install\Status\InfoStatus::class);
         $message->setTitle('No configuration change selected');
     }
     return $message;
 }