class_docstr: Patch pygac.
docstr: Unpatch the pygac imports.
code: def tearDown(self):
      """Unpatch the pygac imports."""
      self.module_patcher.stop()
  
imports: from datetime import datetime
  from unittest import TestCase, mock
  import dask.array
  import numpy
  import pytest
  import xarray
label_desc: Use image node_id 2 for calling the PygacPatcher obj's underlying member method code with example usage: obj.tearDown() without return types