Represents a collection of CQGAccountSummary objects calculated for each currency in an account.

In this collection, there are account summaries calculated for each currency on which the account has a position.
Access to an item in this collection can be made based on the currency ISO code or the currency 0-based index.
See Accessing non-existent collection items for details on accessing items that do not exist in the collection.
See the usage of CQGAccountSummeries collection in the AccountChanged event's example section.