Code inspection: Some values of the enum are not processed inside 'switch' expression and are handled via exception in default arm

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When using a switch expression with an enum, it is not required to have arms for each enum value — these values will be processed in the _ discard.

This might be intended by the author to handle some unimportant values. But if the _ discard throws an exception, all usages of the switch with non-processed enum values will also throw the exception, which is probably a consequence of adding a new value to the enum and forgetting to update the switch accordingly.

enum MyColor { Red, Green, Blue }

string GetColor(MyColor color) => color switch
{
  MyColor.Red => "Red",
  MyColor.Green => "Green",
  _ => throw new ArgumentOutOfRangeException(nameof(color))
};

// The value 'Blue' is not processed in the switch
// so this call will throw an exception
string TestColors => GetColor(MyColor.Blue);