Hi,
In case you need to make a HashMap for input to some specific orekit interface the syntax for multiple types is
HashMap().of_(Type, Type)
And indeed as you are pointing out aerow, the StationDisplacement is a subclassing. The inline anonymous subclassing don’t really exist in the same way in Python (neatly at least, as I understand) and it would be recommended to create a new class by subclassing PythonStationDisplacement and then adding code to this. I don’t really understand the java code that is included in that method declaration “universe.getTidalDisplacement(), oceanLoading”, but haven’t looked into this in depth?
Regards