/**
  * set contact image
  * 
  * @param array $_data
  */
 protected function _setContactImage(&$_data)
 {
     if (!isset($_data['jpegphoto']) || $_data['jpegphoto'] === '') {
         return;
     }
     $imageParams = Tinebase_ImageHelper::parseImageLink($_data['jpegphoto']);
     if (Tinebase_Core::isLogLevel(Zend_Log::DEBUG)) {
         Tinebase_Core::getLogger()->debug(__METHOD__ . '::' . __LINE__ . ' image params:' . print_r($imageParams, TRUE));
     }
     if ($imageParams['isNewImage']) {
         try {
             $_data['jpegphoto'] = Tinebase_ImageHelper::getImageData($imageParams);
         } catch (Tinebase_Exception_UnexpectedValue $teuv) {
             Tinebase_Core::getLogger()->warn(__METHOD__ . '::' . __LINE__ . ' Could not add contact image: ' . $teuv->getMessage());
             unset($_data['jpegphoto']);
         }
     } else {
         unset($_data['jpegphoto']);
     }
 }