This means you can test and look at schemas generated for other DB's without needing a connection to them (have them installed locally etc).
To do this you need to do 2 things.
ServerConfig config = new ServerConfig();
// start offline with no DataSource
// explicitly specify the database platform
// as oracle, h2, postgres, mysql etc
You won't be able to do much with the server except DDL generation and use the Ldap features.
Fixed in HEAD.