def METHOD_NAME(ap, radio_id=0):
    """Returns a CAPWAP CONTROL packet containing the "change state event request" packet of an AP to a controller,
    not including sublayers.
    Args:
        ap (AP): source of the packet
        radio_id (int): id of the concerned radio
    Returns:
        capw_ctrl (bytes): capwap control bytes
    """
    raise NotImplementedError