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	Name	Description
int32	Discard()	Discard all items left in the backfill and swap the current & backfill pointers
int32	Discard ( DeleteFunc Func )
int32	Discard ( uint32 InCurrentLockFlags, uint32& OutNewLockFlags, DeleteFunc Func )	Discard all items in the backfill and swap the current & backfill pointers

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