public static function onDeleteDocument(Event $event)
   {

// change ////
      $id = $event->getParameter('primary');
      $document = Document::loadById($id['ID']);
      // $document = Document::loadById($event->getParameter('primary'));
// change stop ///
      if($document)
      {
         $provider = $document->getProvider();
         if($provider && $provider instanceof CrmEntityDataProvider)
         {
            $provider->onDocumentDelete($document);
         }
      }

      return true;
   }

   public function setSourceType($sourceType): Template
   {
      $sourceType = strtolower($sourceType);
// change ////
      if(DataProviderManager::checkProviderName($sourceType, $this->MODULE_ID))
      {
         $tmpProvider = DataProviderManager::getInstance()->getDataProvider($sourceType, 0, ['isLightMode' => true]);
         $tmpSourceType = strtolower(get_class($tmpProvider));
         unset($tmpProvider);
         if($tmpSourceType !== $sourceType)
         {
            $sourceType = $tmpSourceType;
         }
// change ////         
         $this->sourceType = $sourceType;
      }
      
      return $this;
   }

\Bitrix\Main\Loader::includeModule('crm');
\Bitrix\Main\Loader::includeModule('documentgenerator');

// id сущности
$value = 4;

// тип сущности. Последнее слово - это Deal / Lead / Company / Contact / Order
$provider = new \Bitrix\Crm\Integration\DocumentGenerator\DataProvider\Deal($value);

$result = \Bitrix\DocumentGenerator\DataProviderManager::getInstance()->getArray($provider);

function printProviderValues(array $result, string $prefix = '')
{
    foreach($result as $name => $value)
    {
        $placeholder = \Bitrix\DocumentGenerator\DataProviderManager::getInstance()->valueToPlaceholder($name);
        echo "{" . $prefix . $placeholder . "}";
        echo " : ";
        if(is_array($value))
        {
            printProviderValues($value, $prefix . $placeholder);
        }
        else
        {
            echo $value;
        }
        echo PHP_EOL;
    }

}

printProviderValues($result);

print_r($result);