pyvista_zstd.Reader.thumbnail# property Reader.thumbnail: bytes | None# Return the embedded PNG thumbnail, or None when the file has none. Examples >>> import pyvista as pv >>> import pyvista_zstd >>> pyvista_zstd.write(pv.Sphere(), "sphere.pv", thumbnail=True) >>> png = pyvista_zstd.Reader("sphere.pv").thumbnail