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//0x50 bytes (sizeof)
struct _KSWAPPABLE_PAGE
{
    VOID* RegionStart;                                                      //0x0
    ULONGLONG TransitionLock;                                               //0x8
    unionvolatile _KSWAPPABLE_PAGE_REF_COUNT LockCount;                     //0x10
    struct _MDL Mdl;                                                        //0x18
    ULONGLONG PageNumber;                                                   //0x48
};