// implements ACollection
 // the type attribute is not used for Categories
 protected void newItem(Long aType, boolean isDefault) {
   Category newCategory = null;
   newCategory = Category.newItem(isDefault);
   items.put(newCategory.getId(), newCategory);
   setCurrentItem(newCategory.getId());
   // save needed
   sendSaveNeeded();
 } // END public void newItem(String)