/**
  * Construct a data container that refers to an anonymous subject. See
  * the documentation of the class for details.
  *
  * @since 1.7
  *
  * @param boolean $noDuplicates stating if duplicate data should be avoided
  */
 public static function makeAnonymousContainer($noDuplicates = true, $skipAnonymousCheck = false)
 {
     $subject = new SMWDIWikiPage('SMWInternalObject', NS_SPECIAL, '', 'int');
     $containerSemanticData = new SMWContainerSemanticData($subject, $noDuplicates);
     if ($skipAnonymousCheck) {
         $containerSemanticData->skipAnonymousCheck();
     }
     return $containerSemanticData;
 }