private static boolean isMultiple(final LinkedHashMap<String, CacheElement> elementOrderMap,
      final String namespace, final String type) {
    if (CacheXml.GEODE_NAMESPACE.equals(namespace)) {
      // We only keep the cache elements in elementOrderMap
      final CacheElement cacheElement = elementOrderMap.get(type);
      if (null != cacheElement) {
        return cacheElement.isMultiple();
      }
    }
    // Assume all extensions are not multiples.
    // To support multiple on extensions our map needs to included other
    // namespaces
    return false;
  }
@return <code>true</code> if element allows multiple, otherwise <code>false</code>.
@since GemFire 8.1
geode-core/src/main/java/org/apache/geode/management/internal/configuration/utils/XmlUtils.java