Without this refresh call, `$clonedNode` and `$cloneChild` below won't have the updated properties, although the update is done (checked using phpcrbrowser).

I thought I could fix it inside Jackalope\Node by calling the `setDirty()` method in there, but that only fixed it for the parent node. The child node is still stale.

I didn't want to call the ObjectManager's `refresh()` method within Jackalope\Node because it presumably affects other nodes.

Should I iterate through all the children from within Jackalope\Node and set them to dirty, or use the object manager, or something else?