$fm->listLayouts() only return first level of layouts

[databird]

If you have layout's folder, sub-layouts are not get with function $fm->listLayouts()

Here's the adapted code for getting the first sublevel :

function listLayouts()
   {
      $result = array();

      $apiResult = $this->apiListLayouts();

      if ($this->translateResult) {
         if (! fmGetIsError($apiResult)) {

            $response = $this->getResponse($apiResult);
            $layouts = array_key_exists('layouts', $response) ? $response['layouts'] : array();
            foreach ($layouts as $layout) {
               if (array_key_exists('name', $layout)) {
                  $result[] = $layout['name'];
               }
                   // added by databird :
			   if (array_key_exists('folderLayoutNames', $layout)) {
				  foreach ($layout['folderLayoutNames'] as $sublayout) {
					  if (array_key_exists('name', $sublayout)) {
						$result[] = $sublayout['name'];
					  }
				  }                  
               }
            }
         }
      }
      else {
         $result = $apiResult;
      }

      return $result;
   }

Maybe need to improve for getting multilevel and same probleme occured with "listScript" function.