code: public static List<Response> executeBatchAndWait(Request... requests) {
          Validate.notNull(requests, "requests");
  
          return executeBatchAndWait(Arrays.asList(requests));
      }
docs: Executes requests on the current thread as a single batch and returns the responses.
  <p/>
  This should only be used if you have transitioned off the UI thread.
  
  @param requests
  the Requests to execute
  
  @return a list of Response objects representing the results of the requests; responses are returned in the same
  order as the requests were specified.
  
  @throws NullPointerException
  In case of a null request
  @throws FacebookException
  If there was an error in the protocol used to communicate with the service