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//0x18 bytes (sizeof)
struct tagSWITCH_CONTEXT_ATTRIBUTE
{
    ULONGLONG ulContextUpdateCounter;                                       //0x0
    LONG fAllowContextUpdate;                                               //0x8
    LONG fEnableTrace;                                                      //0xc
    ULONGLONG EtwHandle;                                                    //0x10
};