protected void unregisterConvention(@NotNull NamingConvention<T> extension) {
    String shortName = extension.getShortName();
    Element element = writeConvention(shortName, extension);
    if (element != null) {
      myUnloadedElements.put(shortName, element);
    }
    myNamingConventionBeans.remove(shortName);
    myNamingConventions.remove(shortName);
    myDisabledShortNames.remove(shortName);
  }
protected void unregisterConvention(@NotNull NamingConvention<T> extension)