IfcDoc.CtlRules.LoadTemplateGraph C# (CSharp) Method

        private TreeNode LoadTemplateGraph(TreeNode tnParent, DocModelRule docRule)
        {
            TreeNode tnRule = LoadTemplateRuleNode(tnParent, docRule, docRule.Name);
            UpdateTemplateGraph(tnRule);
            tnRule.Nodes.Clear();

            foreach (DocModelRule docSub in docRule.Rules)
            {
                LoadTemplateGraph(tnRule, docSub);
            }

            if (docRule is DocModelRuleEntity)
            {
                DocModelRuleEntity dme = (DocModelRuleEntity)docRule;
                foreach (DocTemplateDefinition dtd in dme.References)
                {
                    TreeNode tnTemplate = LoadTemplateRuleNode(tnRule, dtd, dtd.Name);
                    if (dtd.Rules != null)
                    {
                        foreach (DocModelRule docTemplateRule in dtd.Rules)
                        {
                            LoadTemplateGraph(tnTemplate, docTemplateRule);
                        }
                    }
                }
            }

            return tnRule;
        }