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//0xc bytes (sizeof)
struct _TP_DIRECT
{
    VOID (*Callback)(struct _TP_CALLBACK_INSTANCE* arg1, struct _TP_DIRECT* arg2, VOID* arg3, struct _IO_STATUS_BLOCK* arg4); //0x0
    ULONG NumaNode;                                                         //0x4
    UCHAR IdealProcessor;                                                   //0x8
};