private void reset() {
    mCacheKey = null;
    mResourceId = null;
    mItemSize = 0;
    mCacheLimit = 0;
    mCacheSize = 0;
    mException = null;
    mEvictionReason = null;
  }
Implementation of {@link CacheEvent} that allows the values to be set and supports recycling of
instances.
imagepipeline-base/src/main/java/com/facebook/cache/disk/SettableCacheEvent.java