public void registerSeverity(@NotNull SeverityBasedTextAttributes info, Color renderColor) {
   final HighlightSeverity severity = info.getType().getSeverity(null);
   myMap.put(severity.getName(), info);
   if (renderColor != null) {
     myRendererColors.put(severity.getName(), renderColor);
   }
   myOrderMap = null;
   HighlightDisplayLevel.registerSeverity(
       severity, getHighlightInfoTypeBySeverity(severity).getAttributesKey());
   severitiesChanged();
 }