docs: public synchronized boolean containsKey(CacheKey key) {
      Preconditions.checkNotNull(key);
      if (!mMap.containsKey(key)) {
        return false;
      }
      EncodedImage storedEncodedImage = mMap.get(key);
      synchronized (storedEncodedImage) {
        if (!EncodedImage.isValid(storedEncodedImage)) {
          // Reference is not valid, this means that someone cleared reference while it was still in
          // use. Log error
          // TODO: 3697790
          mMap.remove(key);
          FLog.w(
              TAG,
              "Found closed reference %d for key %s (%d)",
              System.identityHashCode(storedEncodedImage),
              key.getUriString(),
              System.identityHashCode(key));
          return false;
        }
        return true;
      }
    }