code: def test_asymmetric_overlap_boundary_exception():
      x = da.arange(10, chunks=5)
      with pytest.raises(NotImplementedError):
          x.map_overlap(
              lambda x: x + len(x),
              depth={0: (0, 2)},
              boundary="reflect",
              dtype=x.dtype,
          )
  
imports: from __future__ import annotations
  import pytest
  import numpy
  from numpy.testing import assert_array_almost_equal, assert_array_equal
  import dask.array
  from dask.array.lib.stride_tricks import sliding_window_view
  from dask.array.overlap import boundaries, constant, ensure_minimum_chunksize, nearest, overlap, overlap_internal, periodic, reflect, trim_internal
  from dask.array.utils import assert_eq, same_keys
label_desc: Use image node_id 12 for calling a global function with example usage: test_asymmetric_overlap_boundary_exception() without return types