A look at the new generic constraints in C# 7.3
Unmanaged, Enum and Delegate.
https://blogs.msdn.microsoft.com/seteplia/2018/06/12/dissecting-new-generics-constraints-in-c-7-3/
https://blogs.msdn.microsoft.com/seteplia/2018/06/12/dissecting-new-generics-constraints-in-c-7-3/
