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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def with_vtk(plot=True):
 """ Tests VTK interface and mesh repair of Stanford Bunny Mesh """

    mesh = vtki.PolyData(bunny_scan)
    meshfix = pymeshfix.MeshFix(mesh)
    if plot:
        print('Plotting input mesh')
        meshfix.plot()
    meshfix.repair()
    if plot:
        print('Plotting repaired mesh')
        meshfix.plot()

    return meshfix.mesh