| Required. A Variant value. Either an IMcGraphObj object instance or an index number.
If an IMcGraphObj object instance, then the collection is searched for that IMcGraphObj instance; should no such instance be found, a NULL object is returned. This allows you to check to see if some IMcGraphObj object instance is already part of the collection.
If an index number, then that IMcGraphObj instance is returned. The index number must be from zero to Count-1.
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