code: def test_rag_token_generate_batch(self):
      tokenizer = RagTokenizer.from_pretrained("facebook/rag-token-nq")
      retriever = RagRetriever.from_pretrained(
          "facebook/rag-token-nq",
          index_name="exact",
          use_dummy_dataset=True,
      )
      rag_token = RagTokenForGeneration.from_pretrained(
          "facebook/rag-token-nq", retriever=retriever
      ).to(torch_device)
  
      if torch_device == "cuda":
          rag_token.half()
  
      input_dict = tokenizer(
          self.test_data_questions,
          return_tensors="pt",
          padding=True,
          truncation=True,
      )
  
      input_ids = input_dict.input_ids.to(torch_device)
      attention_mask = input_dict.attention_mask.to(torch_device)
  
      output_ids = rag_token.generate(
          input_ids,
          attention_mask=attention_mask,
      )
  
      outputs = tokenizer.batch_decode(
          output_ids, skip_special_tokens=True
      )
  
      EXPECTED_OUTPUTS = [
          " albert einstein",
          " september 22, 2017",
          " amplitude modulation",
          " stefan persson",
          " april 20, 2018",
          " the 1970s",
          " 7.1. 2",
          " 13",
      ]
      self.assertListEqual(outputs, EXPECTED_OUTPUTS)
  
imports: import gc
  import json
  import os
  import shutil
  import tempfile
  import unittest
  from unittest.mock import patch
  import numpy
  from transformers import BartTokenizer, T5Tokenizer
  from transformers.models.bert.tokenization_bert import VOCAB_FILES_NAMES
  from transformers.models.dpr.tokenization_dpr import DPRContextEncoderTokenizer, DPRQuestionEncoderTokenizer
  from transformers.models.roberta.tokenization_roberta import VOCAB_FILES_NAMES
  from transformers.testing_utils import get_tests_dir, require_sentencepiece, require_tokenizers, require_torch, require_torch_non_multi_gpu, slow, torch_device
  from transformers.utils import cached_property, is_datasets_available, is_faiss_available, is_torch_available
  from ..bart.test_modeling_bart import BartModelTester
  from ..dpr.test_modeling_dpr import DPRModelTester
  from ..t5.test_modeling_t5 import T5ModelTester
label_desc: Use image node_id 12 for calling the RagModelIntegrationTests obj's underlying member method code with example usage: obj.test_rag_token_generate_batch() without return types