struct _VF_AVL_TREE// Size=0x40
{
    long Lock;// Offset=0x0 Size=0x4
    void * NodeToFree;// Offset=0x4 Size=0x4
    unsigned long NodeRangeSize;// Offset=0x8 Size=0x4
    unsigned long NodeCount;// Offset=0xc Size=0x4
    struct _VF_AVL_TABLE * Tables;// Offset=0x10 Size=0x4
    unsigned long TablesNo;// Offset=0x14 Size=0x4
    union _unnamed_904 u1;// Offset=0x18 Size=0x4
};