int iterations = 10;
    WeakReference<Object> ref = new WeakReference<>(null);
    int expectedComputations = 0;
    for (int i = 0; i < iterations; i++) {
      // The entry should get garbage collected and recomputed.
      Object oldValue = ref.get();
      if (oldValue == null) {
        expectedComputations++;
      }
      ref = new WeakReference<>(cache.getUnchecked(1));
      oldValue = null;

		return
	}

	// After we've checked for an invalid copy (above), if a server-side checksum type
	// is requested, we need to read the source to recompute the checksum.
	if dstOpts.WantServerSideChecksumType.IsSet() {
		srcInfo.metadataOnly = false
	}

	// Federation only.
	remoteCallRequired := isRemoteCopyRequired(ctx, srcBucket, dstBucket, objectAPI)