code: public static void getActionsByUser (Activity context, long userId, int start, int end, ActionListListener listener) {
  		proxy.getActionsByUser(context, userId, start, end, listener);
  	}
docs: Gets the actions of a single user.
  @param context The current context.
  @param userId The user for whom the actions will be returned.
  @param start The start index for pagination (0 based).
  @param end The end index for pagination (0 based).
  @param listener A listener to handle the result.