This will fail in `master`, because currently type parameter(s) are required. You can use `List(Any)` in the worst case scenario, but I would be much better to use a specific type. If there is a particular type missing, let me know, I will add support for it. `data = Dict()` most likely will have to be changed to `Data(String, Any)` at this point, because there is no support numpy's, pandas' data types.