code: def test_export_multi(tmpdir, skip_check_gc):
      filename = str(tmpdir.mkdir("tmpdir").join("scene-multi"))
      multi = pv.MultiBlock()
      # Add examples
      multi.append(examples.load_ant())
      multi.append(examples.load_sphere())
      multi.append(examples.load_uniform())
      multi.append(examples.load_airplane())
      multi.append(examples.load_rectilinear())
      # Create the scene
      plotter = pv.Plotter()
      plotter.add_mesh(multi)
      plotter.export_vtksz(filename)
      # Now make sure the file is there
      assert os.path.isfile(f"{filename}")
  
imports: import os
  from IPython.display import IFrame
  import numpy
  import pytest
  import pyvista
  from pyvista import examples
label_desc: Use image node_id 15 for calling a global function with example usage: test_export_multi(tmpdir, skip_check_gc) without return types