code: def test_min_max_nullable_uint64_empty_group():
      # don't raise NotImplementedError from libgroupby
      cat = pd.Categorical([0] * 10, categories=[0, 1])
      df = DataFrame(
          {"A": cat, "B": pd.array(np.arange(10, dtype=np.uint64))}
      )
      gb = df.groupby("A", observed=False)
  
      res = gb.min()
  
      idx = pd.CategoricalIndex([0, 1], dtype=cat.dtype, name="A")
      expected = DataFrame(
          {"B": pd.array([0, pd.NA], dtype="UInt64")}, index=idx
      )
      tm.assert_frame_equal(res, expected)
  
      res = gb.max()
      expected.iloc[0, 0] = 9
      tm.assert_frame_equal(res, expected)
  
imports: import builtins
  import datetime
  from string import ascii_lowercase
  import numpy
  import pytest
  from pandas._libs.tslibs import iNaT
  import pandas
  from pandas import DataFrame, MultiIndex, Series, Timestamp, date_range, isna
  import pandas._testing
  from pandas.util import _test_decorators
label_desc: Use image node_id 28 for calling a global function with example usage: test_min_max_nullable_uint64_empty_group() without return types