code: @Override
      public java.util.concurrent.Future<GetUserResult> getUserAsync(com.amazonaws.handlers.AsyncHandler<GetUserRequest, GetUserResult> asyncHandler) {
  
          return getUserAsync(new GetUserRequest(), asyncHandler);
      }
docs: Simplified method form for invoking the GetUser operation with an AsyncHandler.
  
  @see #getUserAsync(GetUserRequest, com.amazonaws.handlers.AsyncHandler)