Question: Delete the GetItemByIndex method from the InvItemList class, and replace it with an indexer that receives an int value. This indexer should include both get

Delete the GetItemByIndex method from the InvItemList class, and replace it with an indexer that receives an int value. This indexer should include both get and set accessors, and the get accessor should check that the value that

s passed to it is a valid index. If the index isn

t valid, the accessor should throw an ArgumentOutOfRangeException with a message that consists of the index value.

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