UnsupportedRepositoryOperationException (RunTimeException) thrown by GalleryWorkflowImpl

Create new image variants and add an image of new type.
This will fail.

Desired situation:
It succeeds.

Low Level Cause:
org.apache.jackrabbit.core.NodeImpl#getUUID throws UnsupportedRepositoryOperationException()

org.hippoecm.repository.gallery.impl.GalleryWorkflowImpl#createGalleryItem
still uses depricated getNodeByUUID and getUUID

Fix:
Replace by getNodeByIdentifier and getNodeByIdentifier()