code: def test_single_annotation(annotation):
      da = pytest.importorskip("dask.array")
      with dask.annotate(**annotation):
          A = da.ones((10, 10), chunks=(5, 5))
  
      alayer = A.__dask_graph__().layers[A.name]
      assert alayer.annotations == annotation
      assert not dask.get_annotations()
  
imports: from __future__ import annotations
  import os
  import threading
  import xml.etree.ElementTree
  from collections.abc import Set
  from concurrent.futures import ThreadPoolExecutor
  import pytest
  import dask
  from dask.blockwise import Blockwise, blockwise_token
  from dask.highlevelgraph import HighLevelGraph, Layer, MaterializedLayer, to_graphviz
  from dask.utils_test import inc
label_desc: Use image node_id 10 for calling a global function with example usage: test_single_annotation(annotation) without return types