Represents a collection of resolved instrument names.

In this collection names of instruments corresponding to some commodity symbols are present.
Access to an item in this collection can be made based on its index. The index is 0 based, i.e. the first item in the collection has index 0.
See Accessing non-existent collection items for details on accessing items that do not exist in the collection.
See the usage of CQGCommodityInstruments collection in CommodityInstrumentsResolved Example.