Some new PNSEs have been added in .NET 6, for example, for all the StrongNameKeyPair members. The API docs should be updated accordingly. Related to dotnet/docs#23916.

https://github.com/dotnet/runtime/blob/main/src/libraries/System.Private.CoreLib/src/System/Reflection/StrongNameKeyPair.cs#L9: now all constructors and APIs will throw.

Originally posted by @buyaa-n in #6656 (comment)