!! parameter null checking is taken off from C# 11

 As discussed here:-

https://github.com/dotnet/csharplang/blob/main/meetings/2022/LDM-2022-04-13.md

Instead you get this - :)

https://learn.microsoft.com/en-us/visualstudio/ide/reference/add-null-checks-for-parameters?view=vs-2022


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