Removes an entry from the cache.
Public MustOverride Function Remove(ByVal key As System.String, ByVal regionName As System.String) As T
Unique identifier of the cache item.
Optional name of a region in cache.
The value of the item removed from the cache if found, otherwise; null.
Cache users may call Remove on items that do not exist in the cache. The impelementation must not throw an error in this case continue as if the item was removed and returning null.