code: def test_transform():
      obj = TransformBlob()
      pf = pickle.dumps(obj)
      del obj
  
      obj = pickle.loads(pf)
      # Check parent -> child links of TransformWrapper.
      assert obj.wrapper._child == obj.composite
      # Check child -> parent links of TransformWrapper.
      assert [v() for v in obj.wrapper._parents.values()] == [
          obj.composite2
      ]
      # Check input and output dimensions are set as expected.
      assert obj.wrapper.input_dims == obj.composite.input_dims
      assert obj.wrapper.output_dims == obj.composite.output_dims
  
imports: from io import BytesIO
  import ast
  import pickle
  import pickletools
  import numpy
  import pytest
  import matplotlib
  from matplotlib import cm
  from matplotlib.testing import subprocess_run_helper
  from matplotlib.testing.decorators import check_figures_equal
  from matplotlib.dates import rrulewrapper
  from matplotlib.lines import VertexSelector
  import matplotlib.pyplot
  import matplotlib.transforms
  import matplotlib.figure
  from mpl_toolkits.axes_grid1 import parasite_axes
label_desc: Use image node_id 11 for calling a global function with example usage: test_transform() without return types