def __init__(self):
        vstruct.VStruct.__init__(self)
        self.AccessBufferAgeThreshold = v_uint64()
        self.AccessBufferRef = EX_RUNDOWN_REF()
        self.AccessBufferExistsEvent = KEVENT()
        self.AccessBufferMax = v_uint32()
        self.AccessBufferList = SLIST_HEADER()
        self.StreamSequenceNumber = v_uint32()
        self.Flags = v_uint32()
        self.ScenarioPrefetchCount = v_uint32()
        self._pad0040 = v_bytes(size=12)