public final int getNumber() {
        if (this == UNRECOGNIZED) {
          throw new java.lang.IllegalArgumentException(
              "Can't get the number of an unknown enum value.");
        }
        return value;
      }
<pre>
Preserve the object's original ACLs. This requires the service account
to have `storage.objects.getIamPolicy` permission for the source object.
[Uniform bucket-level
access](https://cloud.google.com/storage/docs/uniform-bucket-level-access)
must not be enabled on either the source or destination buckets.
</pre>

<code>ACL_PRESERVE = 2;</code>
java-storage-transfer/proto-google-cloud-storage-transfer-v1/src/main/java/com/google/storagetransfer/v1/proto/TransferTypes.java