code: def data_missing_for_sorting():
      return JSONArray([{"b": 1}, {}, {"a": 4}])
  
imports: import collections
  import operator
  import sys
  import numpy
  import pytest
  import pandas
  import pandas._testing
  from pandas.tests.extension import base
  from pandas.tests.extension.json.array import JSONArray, JSONDtype, make_data
label_desc: Use image node_id 5 for calling a global function with example usage: data_missing_for_sorting() and returns: JSONArray