code: protected T callMethod(IFacebookMethod method, Pair<String, CharSequence>... paramPairs)
      throws FacebookException, IOException {
      return callMethod(method, Arrays.asList(paramPairs));
    }
docs: Call the specified method, with the given parameters, and return a DOM tree with the results.
  
  @param method the fieldName of the method
  @param paramPairs a list of arguments to the method
  @throws Exception with a description of any errors given to us by the server.