code: public static boolean containsKey(final String _key)
      {
          final Cache<String, BundleInterface> cache = InfinispanCache.get()
                          .<String, BundleInterface>getIgnReCache(BundleMaker.CACHE4BUNDLE);
          return cache.containsKey(_key);
      }
docs: Does a Bundle for the Key exist.
  
  @param _key key to search for
  @return true if found, else false