The variable ‘ex’ is declared but never used. How to suppress this error?

catch (OutOfMemoryException ex)
{
   Log.Error("Error")
}

Severity Code Description Project File Line Suppression State
Error CS0168 The variable ‘ex’ is declared but never used

To suppress this code remove variable and simply write catch block like this-

catch (OutOfMemoryException)
{
  Log.Error("Error")
}

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