code: def identical_decorator(func):
      """Decorate but do nothing."""
      return func
  
imports: import contextlib
  import os
  from tempfile import NamedTemporaryFile
  from unittest import mock
  import dask.array
  import numpy
  import pytest
  import xarray
  from satpy.enhancements import create_colormap, on_dask_array, on_separate_bands, using_map_blocks
label_desc: Use image node_id 2 for calling a global function with example usage: identical_decorator(func) and returns: func