def METHOD_NAME():
    from tests.submod.stuff import Stuff
    lo = min(linenos(Stuff.instancestuff))
    hook = mock.Mock()
    old_method = Stuff.instancestuff
    if PY2:
        inject_hook(Stuff.instancestuff.__func__, hook, lo, 0)
    else:
        inject_hook(Stuff.instancestuff, hook, lo, 0)
    stuff = Stuff()
    assert stuff.instancestuff(42) == 42
    hook.assert_called_once_with(0)
    Stuff.instancestuff = old_method