Catrobat.IDE.Core.Xml.XmlObjects.Formulas.XmlFormulaTreeFactory.CreateAddNode C# (CSharp) Метод

        public static XmlFormulaTree CreateAddNode(XmlFormulaTree leftChild, XmlFormulaTree rightChild)
        {
            return new XmlFormulaTree
            {
                VariableType = "OPERATOR",
                VariableValue = "PLUS",
                LeftChild = leftChild,
                RightChild = rightChild
            };
        }
        public static XmlFormulaTree CreateSubtractNode(XmlFormulaTree leftChild, XmlFormulaTree rightChild)