code: def test_serialize_json_safe_missing(self):
      values = [0, np.nan, 2, 3, 4, 5]
      result = serialize_json_safe(values)
      assert result == [0, 0, 2, 3, 4, 5]
  
      values = [0, np.inf, 2, 3, 4, 5]
      result = serialize_json_safe(values)
      assert result == [0, 0, 2, 3, 4, 5]
  
      values = ["a", "b", "a", np.nan, "a", "b"]
      result = serialize_json_safe(values)
      assert result == ["a", "b", "a", 0, "a", "b"]
  
imports: import datetime
  import json
  import numpy
  import pandas
  import pytest
  from scipy.sparse import csr_matrix
  from raiutils.data_processing import convert_to_list, convert_to_string_list_dict, serialize_json_safe
label_desc: Use image node_id 6 for calling the TestSerializationUtilities obj's underlying member method code with example usage: obj.test_serialize_json_safe_missing() without return types