public static T? ExtractOptionalArgument()

in src/Testing/Emulator/Policies/ArgumentsExtensions.cs [23:41]

• 16 lines of code
• 5 McCabe index (conditional complexity)

    public static T? ExtractOptionalArgument<T>(this object?[]? args) where T : class
    {
        if (args is null)
        {
            return null;
        }

        if (args is not { Length: 1 })
        {
            throw new ArgumentException("Expected only 1 argument", nameof(args));
        }

        if (args[0] is not null && args[0] is not T)
        {
            throw new ArgumentException($"Expected {typeof(T).Name} as first argument", nameof(args));
        }

        return args[0] as T;
    }