async def METHOD_NAME(
    with_initial_bookmarks
) -> None:
    if with_initial_bookmarks:
        initial_bookmarks = ["db1:bm1", "db1:bm2"]
    else:
        initial_bookmarks = None
    bmm = bookmark_manager(initial_bookmarks=initial_bookmarks)
    await bmm.update_bookmarks(["db1:bm1"], [])
    received_bookmarks = await bmm.get_bookmarks()
    expected_bookmarks = set(initial_bookmarks or [])
    assert sorted(list(received_bookmarks)) == sorted(list(expected_bookmarks))