code: def test_count_vocab_items(self):
      namespace_token_counts = defaultdict(lambda: defaultdict(int))
      self.field.count_vocab_items(namespace_token_counts)
  
      assert namespace_token_counts["tokens"] == {
          "-1": 1,
          "0": 1,
          "1": 1,
          "name": 1,
          "in": 2,
          "english": 2,
          "location": 1,
          "paradeniz": 1,
          "mersin": 1,
          "lake": 1,
          "gala": 1,
          "edirne": 1,
      }
  
imports: from __future__ import division
  from __future__ import with_statement
  from __future__ import absolute_import
  from collections import defaultdict
  import pytest
  from numpy.testing import assert_almost_equal
  import torch
  from allennlp.common.testing import AllenNlpTestCase
  from allennlp.data import Vocabulary
  from allennlp.data.fields import KnowledgeGraphField
  from allennlp.data.token_indexers import SingleIdTokenIndexer, TokenCharactersIndexer
  from allennlp.data.tokenizers import WordTokenizer
  from allennlp.data.tokenizers.word_splitter import SpacyWordSplitter
  from allennlp.semparse.contexts import TableQuestionKnowledgeGraph
label_desc: Use image node_id 2 for calling the KnowledgeGraphFieldTest obj's underlying member method code with example usage: obj.test_count_vocab_items() without return types