title: Using Cypher to autogenerate IDs for SDN4
body: <p>I have created a neo4j model with text file of <code>cypher</code> statements. Now i'd like to create an application that uses this database, and I'll be using SDN4. In my <code>@NodeEntity</code> class, I will need to have the <code>GraphID</code> of type <code>Long</code>declared. But this ID gets generated by SDN4, and my database doesn't have those IDs. Is there a way to have those created via Cypher so I can simply have my Java objects mapped correctly to the pre-existing nodes and relationships in the database?</p>