Hidden Object Methods Cannot Be Overriden

[JasonBock]

To reproduce:

public class StaticToString
{
  protected static new string ToString() => "c";   
}

public static class Test
{
  public static void Go() => Rock.Create<StaticToString>();
}

This causes CS0176 and CS0506. Basically, ToString() is new and also static (though if you remove static the same problem happens) so it can't be overridden.

This was found with Microsoft.EntityFrameworkCore.Storage.ValueConversion.TimeSpanToStringConverter.