value of Node_Blank.getBlankNodeId() plain or AnonIdStr object? #18

In the NodeFactory there are two ways to create a blank node (bNode):

• NodeFactory.createAnon(anonId)
• NodeFactory.createFromTalisRdfJson(talisJson) (e.g. called with var talisJson = { value : '_:anna', type : 'bnode' })

In the first case bNode.getBlankNodeId() will return anonId (which is most probably a string). In the second case the actual blank node id is wrapped in an AnonIdStr object.

Which variant is the official interface?