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

        public static XmlFormulaTree CreateNegativeSignNode(XmlFormulaTree child)
        {
            return new XmlFormulaTree
            {
                VariableType = "OPERATOR",
                VariableValue = "MINUS",
                LeftChild = null,
                RightChild = child
            };
        }
        public static XmlFormulaTree CreateMultiplyNode(XmlFormulaTree leftChild, XmlFormulaTree rightChild)