Adding label to node in a batch-based transaction causes exception

[weikai-booodl]

Hi,

Test code as below

    tx = db.transaction()
    node = db.nodes.create()
    node.labels.add("Test")
    tx.commit()

The line node.labels.add will raise an exception like AttributeError: 'function' object has no attribute 'add'. I was wondering whether it is a bug or simply not supported.

[versae]

Unfortunately, labels support in batch-based transactions is not supported yet.