public AntDomElement fromString(@Nullable @NonNls String s, ConvertContext context) {
   if (s != null) {
     final AntDomElement element = AntSupport.getInvocationAntDomElement(context);
     if (element != null) {
       return findElementById(
           element.getContextAntProject(),
           s,
           CustomAntElementsRegistry.ourIsBuildingClasspathForCustomTagLoading.get());
     }
   }
   return null;
 }