Catrobat.IDE.Core.Models.Formulas.Tree.FormulaTreeFactory.CreateSubtractNode C# (CSharp) Метод

        public static FormulaNodeSubtract CreateSubtractNode(FormulaTree leftChild, FormulaTree rightChild)
        {
            return new FormulaNodeSubtract
            {
                LeftChild = leftChild,
                RightChild = rightChild
            };
        }
        public static FormulaNodeNegativeSign CreateNegativeSignNode(FormulaTree child)