6.1.2.1.3. What should I use to check if an Item exists before getting the
Value?
Use Session.itemExists(String absPath), Node.hasNode(String
relPath) or Property.hasProperty(String name). It's also is possible
to check Node.hasNodes() and Node.hasProprties().
6.1.2.1.2. Does it make sense to have all the node referencable to use
getNodeByUUID all the time?