def METHOD_NAME(self):
    # create an KPOINTS
    kpoints = self.ref_kpoints
    kpoints.write_file("KPOINTS")
    # modify and test
    ft = ModifyKpoints(
        kpoints_update={"kpts": [[3, 4, 5]]},
    )
    ft = load_object(ft.to_dict())  # simulate database insertion
    ft.run_task({})
    kpoints_mod = Kpoints.from_file("KPOINTS")
    self.assertEqual(kpoints_mod.kpts, [[3, 4, 5]])