code: def test_multi_block_repr(ant, sphere, uniform, airplane):
      multi = multi_from_datasets(ant, sphere, uniform, airplane, None)
      # Now check everything
      assert multi.n_blocks == 5
      assert multi._repr_html_() is not None
      assert repr(multi) is not None
      assert str(multi) is not None
  
imports: import pathlib
  import platform
  import weakref
  import numpy
  import pytest
  import vtk
  import pyvista
  from pyvista import ImageData, MultiBlock, PolyData, RectilinearGrid, StructuredGrid, examples
label_desc: Use image node_id 16 for calling a global function with example usage: test_multi_block_repr(ant, sphere, uniform, airplane) without return types