NLog.Conditions.ConditionRelationalExpression.ToString C# (CSharp) Метод

        public override string ToString()
        {
            return "(" + this.LeftExpression + " " + this.GetOperatorString() + " " + this.RightExpression + ")";
        }

 public void UnsupportedRelationalOperatorTest2()
 {
     var cond = new ConditionRelationalExpression("true", "true", (ConditionRelationalOperator)(-1));
     cond.ToString();
 }