/**
  * Wrapper to return the ESI/SSI content for a (json)data call
  * @param string $adapterName (Json)Data adapter name
  * @param string $adapterMethod (Json)Data method name
  * @param array $params (optional) params for (Json)Data method call
  * @return string ESI/SSI directives to put into HTML code
  */
 public function getEsiContent($adapterName, $adapterMethod, $params = array())
 {
     return $this->cache->getEsiContent($adapterName, $adapterMethod, $params);
 }