code: def test_inference_reader(self):
      config = RealmConfig(reader_beam_size=2, max_span_width=3)
      model = RealmReader.from_pretrained(
          "google/realm-orqa-nq-reader", config=config
      )
  
      concat_input_ids = torch.arange(10).view((2, 5))
      concat_token_type_ids = torch.tensor(
          [[0, 0, 1, 1, 1], [0, 0, 1, 1, 1]], dtype=torch.int64
      )
      concat_block_mask = torch.tensor(
          [[0, 0, 1, 1, 0], [0, 0, 1, 1, 0]], dtype=torch.int64
      )
      relevance_score = torch.tensor([0.3, 0.7], dtype=torch.float32)
  
      output = model(
          concat_input_ids,
          token_type_ids=concat_token_type_ids,
          relevance_score=relevance_score,
          block_mask=concat_block_mask,
          return_dict=True,
      )
  
      block_idx_expected_shape = torch.Size(())
      start_pos_expected_shape = torch.Size((1,))
      end_pos_expected_shape = torch.Size((1,))
      self.assertEqual(output.block_idx.shape, block_idx_expected_shape)
      self.assertEqual(output.start_pos.shape, start_pos_expected_shape)
      self.assertEqual(output.end_pos.shape, end_pos_expected_shape)
  
      expected_block_idx = torch.tensor(1)
      expected_start_pos = torch.tensor(3)
      expected_end_pos = torch.tensor(3)
  
      self.assertTrue(
          torch.allclose(
              output.block_idx, expected_block_idx, atol=1e-4
          )
      )
      self.assertTrue(
          torch.allclose(
              output.start_pos, expected_start_pos, atol=1e-4
          )
      )
      self.assertTrue(
          torch.allclose(output.end_pos, expected_end_pos, atol=1e-4)
      )
  
imports: import copy
  import unittest
  import numpy
  from transformers import RealmConfig, is_torch_available
  from transformers.testing_utils import require_torch, slow, torch_device
  from ...test_configuration_common import ConfigTester
  from ...test_modeling_common import ModelTesterMixin, floats_tensor, ids_tensor, random_attention_mask
label_desc: Use image node_id 4 for calling the RealmModelIntegrationTest obj's underlying member method code with example usage: obj.test_inference_reader() without return types