/**
  * Pause on the current media in the current session
  *
  * @param callbackContext
  * @return
  */
 public boolean mediaPause(CallbackContext callbackContext) {
   if (currentSession != null) {
     currentSession.mediaPause(genericCallback(callbackContext));
   } else {
     callbackContext.error("session_error");
   }
   return true;
 }