Adding custom function

[GMolozis]

I am trying to add a custom function that generates country data in a similar way firstName is generated. I created the class in the same directory the other types are defined but
according to the README I have to register the package name to the WorkflowConfig. So I added the package "net.acesinc.data.json.generator.config" into the WorkflowConfig.java file but the function does not work. Any suggestions?