code: def test_rag_token_greedy_search(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 = TFRagTokenForGeneration.from_pretrained(
          "facebook/rag-token-nq", retriever=retriever
      )
  
      # check first two questions
      input_dict = tokenizer(
          self.test_data_questions[:2],
          return_tensors="tf",
          padding=True,
          truncation=True,
      )
  
      input_ids = input_dict.input_ids
      attention_mask = input_dict.attention_mask
  
      # make sure only 1 beam is used
      rag_token.config.num_beams = 1
  
      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",
      ]
      self.assertListEqual(outputs, EXPECTED_OUTPUTS)
  
imports: import json
  import os
  import shutil
  import tempfile
  import unittest
  from unittest.mock import patch
  import numpy
  from transformers import BartTokenizer
  from transformers.models.bert.tokenization_bert import VOCAB_FILES_NAMES
  from transformers.models.dpr.tokenization_dpr import DPRQuestionEncoderTokenizer
  from transformers.models.roberta.tokenization_roberta import VOCAB_FILES_NAMES
  from transformers.testing_utils import require_sentencepiece, require_tf, require_tokenizers, slow
  from transformers.utils import cached_property, is_datasets_available, is_faiss_available, is_tf_available
  from ..bart.test_modeling_tf_bart import TFBartModelTester
  from ..dpr.test_modeling_tf_dpr import TFDPRModelTester
label_desc: Use image node_id 11 for calling the TFRagModelIntegrationTests obj's underlying member method code with example usage: obj.test_rag_token_greedy_search() without return types