The classes need refactoring/rewriting to use modern & idiomatic C# syntax using [LINQ](https://learn.microsoft.com/en-us/dotnet/csharp/programming-guide/concepts/linq/introduction-to-linq-queries). - [x] Nested Extensions - [x] Conversion Extensions - [ ] File System - [x] Exceptions - [x] Defaults
The classes need refactoring/rewriting to use modern & idiomatic C# syntax using LINQ.