code: public void createExpirationMetaData(DCache cache) {
          //final String methodName = "createExpirationMetaData()";
          ExpirationMetaData expirationMetaData = (ExpirationMetaData)cacheInstancesTable.get(cache);
          if (expirationMetaData == null) {
              int initialTableSize = DEFAULT_SIZE_FOR_MEM;
              if (cache.getSwapToDisk() && cache.getCacheConfig().getDiskCachePerformanceLevel() == CacheConfig.HIGH) {
                  initialTableSize = DEFAULT_SIZE_FOR_MEM_DISK;
              }
              expirationMetaData = new ExpirationMetaData(initialTableSize);
              cacheInstancesTable.put(cache, expirationMetaData);
          }
      }
docs: This method is called when the cache is created. This will initialize ExpirationMetaData for specified cache
  
  @param cache The cache instance.