CSHARP-4443 added comprehensive dictionary LINQ support for all 3 representations. The current test suite covers:
- Dictionary
- IDictionary
However, IReadOnlyDictionary is not currently tested. We also want to add supporting for translating the Keys and Values properties of IReadOnlyDictionary. This is ticket was created separately to reduce the scope of CSHARP-4443 which is already a large ticket.