Catrobat.IDE.Core.Models.Formulas.Tree.FormulaTree.EvaluateNumber C# (CSharp) Метод

        public virtual double EvaluateNumber()
        {
            throw new NotSupportedException();
        }

 public static double EvaluateNumber(FormulaTree formula)
 {
     return formula == null ? 0 : formula.EvaluateNumber();
 }