export interface TreeTemplateEvent extends TemplateEvent 

treeVeiw.treeOptions.templateOptions = {
  template: `<input type='button'>`,
  templateEvents: [
    {    selector: "input[type='button']",
         event: {},
         renderCallback(tree, model, element, initialize) {
             element.value = model.value;
         }
    }
  ]
}