code: RegistryEntry getRegistryEntry(ConfigElement element) {
          if (element.getParent() == null || element.childAttributeName == null)
              return getRegistryEntryByPidOrAlias(element.getNodeName());
  
          Map<String, RegistryEntry> parentMap = childAliasMap.get(element.childAttributeName);
          if (parentMap == null)
              return null;
  
          return parentMap.get(element.getParent().getNodeName());
      }
docs: ---old api