public void deleteReference() {
    if (decreaseRefCount() == 0) {
      T deleted;
      synchronized (this) {
        deleted = mValue;
        mValue = null;
      }
      if (deleted != null) {
        if (mResourceReleaser != null) {
          mResourceReleaser.release(deleted);
        }
        removeLiveReference(deleted);
      }
    }
  }
Decrement the reference count for the shared reference. If the reference count drops to zero,
then dispose of the referenced value
fbcore/src/main/java/com/facebook/common/references/SharedReference.java