code: def test_uses_pandas_na():
      a = pd.array([1, None], dtype=Int64Dtype())
      assert a[1] is pd.NA
  
imports: import numpy
  import pytest
  import pandas
  import pandas._testing
  from pandas.api.types import is_integer
  from pandas.core.arrays import IntegerArray
  from pandas.core.arrays.integer import Int8Dtype, Int32Dtype, Int64Dtype
label_desc: Use image node_id 2 for calling a global function with example usage: test_uses_pandas_na() without return types