docs: protected boolean isInvalidateParent(String xpath) {
  
          if (!CmsXmlUtils.isDeepXpath(xpath)) {
              return false;
          }
          Boolean isInvalidateParent = null;
          // look up the default from the configured mappings
          isInvalidateParent = m_relationChecks.get(xpath);
          if (isInvalidateParent == null) {
              // no value found, try default xpath
              String path = CmsXmlUtils.removeXpath(xpath);
              // look up the default value again without indexes
              isInvalidateParent = m_relationChecks.get(path);
          }
          if (isInvalidateParent == null) {
              return false;
          }
          return isInvalidateParent.booleanValue();
      }