async def METHOD_NAME(
    decoy: Decoy,
    mock_reader: Reader,
    read_started_event: asyncio.Event,
    ok_to_finish_read_event: asyncio.Event,
) -> None:
    """Configure the Reader with Event flags for controlling read timing."""
    async def _mock_read() -> None:
        read_started_event.set()
        ok_to_finish_read_event.clear()
        await ok_to_finish_read_event.wait()
    decoy.when(await mock_reader.read()).then_do(_mock_read)