/**
  * Builds ReportingTask and places it into certain group. Also if group is not exists yet, it will be created
  * with necessary parameters, such as group_notifications=0.
  *
  * @param array $command
  * @param string $groupName
  * @return ReportingTask
  */
 public static function buildTask($command, $groupName)
 {
     $groupConfig = ['email_notification' => 0, 'allow_parallel_run' => 0, 'group_notifications' => 0, 'run_last_command_only' => 0];
     if (null === ($group = DeferredGroup::findOne(['name' => $groupName]))) {
         $group = new DeferredGroup();
         $group->loadDefaultValues();
         $group->setAttributes($groupConfig);
         $group->name = $groupName;
         $group->save();
     }
     if ((int) $group->group_notifications !== 0) {
         // otherwise DeferredController 'deferred-queue-complete' event will not trigger
         // and we'll unable to write config
         $group->setAttributes($groupConfig);
         $group->save(array_keys($groupConfig));
     }
     $task = new ReportingTask();
     $task->model()->deferred_group_id = $group->id;
     $task->cliCommand(DeferredHelper::getPhpBinary(), $command);
     return $task;
 }