@Nullable
  @Override
  public synchronized CloseableReference<Bitmap> cloneUnderlyingBitmapReference() {
    return CloseableReference.cloneOrNull(mBitmapReference);
  }
Get a cloned bitmap reference for the underlying original CloseableReference&lt;Bitmap&gt;.

<p>After calling this method, this object can still be used. See {@link
#convertToBitmapReference()} for an alternative that detaches the original reference instead.

@return the cloned bitmap reference without altering this instance or null if already closed
imagepipeline-base/src/main/java/com/facebook/imagepipeline/image/BaseCloseableStaticBitmap.java