code: def atop(*args, **kwargs):
      warnings.warn("The da.atop function has moved to da.blockwise")
      return blockwise(*args, **kwargs)
  
file_path: dask/dask/array/blockwise.py
imports: from __future__ import annotations
  import numbers
  import warnings
  import tlz
  from dask import base, utils
  from dask.blockwise import blockwise
  from dask.delayed import unpack_collections
  from dask.highlevelgraph import HighLevelGraph
  from dask.array.core import new_da_object
label_desc: Use image node_id 2 for calling a global function with example usage: atop() and returns: blockwise