System.out.println("Validating on-the-fly: \n");
m_validationOptions = new XmlOptions();
m_validationOptions.setValidateOnSet();
TodolistDocument todoList = (TodolistDocument)parseXml(xmlPath, m_validationOptions);
Todolist list = todoList.getTodolist();
ItemType firstItem = list.getItemArray(0);
// Schema defines the <id> element as allowing values up to 100. So
// this line throws an exception because it invalidates the XML the
// code is updating.
firstItem.setId(8587);