[text] How to write an add method Novice public static int Addint a int b Beginner public static double Adddouble a double b Advanced public static T AddTT a T b where T INumberT . public static T AddTT a Junior T double accuracy bool throwIfNegative developer where T INumbexHolderT bool . public static AddResult AddTNumberHolderBase a Senior NumberHolderBase b T accuracy FuncT Exception negativeExceptionGenerator developer b tonccaiesories public static OperationResultBaseNumberHolderBase Senior software architect bool AzureConnector AddT TSql ConvertableBaseint string string a ConvertableBaseint string string b AdditionContextT ctx Actiondouble int deviationHandler FuncTsql string emailAddressesProviderfunc CancellationToken ct