Returns the serial number of an item. If the item has already been assigned a serial number, returns that number; otherwise, assigns a new number to the item and returns that new number.

public long GetNewOrOld(
	T item
)

Public Function GetNewOrOld ( 
	item As T
) As Long

public:
long long GetNewOrOld(
	T item
)

member GetNewOrOld : 
        item : 'T -> int64