code: public ConfigurationItem getDefaultItem(final String name) {
      if(name==null) throw new IllegalArgumentException("The passed name was null");
      return defaultConfItems.get(name);
    }
docs: Returns the default {@link ConfigurationItem} for the passed name
  which can be the item's key or cl-option
  @param name The item's key or cl-option
  @return The named ConfigurationItem or null if one was not found