Fully missing JSON definitions on `HMIP_SYSTEM_RESPONSE` events

[Bizarrus]

If you receiving an HMIP_SYSTEM_RESPONSE, the body is only an Object:

connect-api-java/src/main/java/de/eq3/plugin/domain/control/HmipSystemResponse.java

Line 56 in 9ca62ea

private Object body;

In this version, you cannot bypass or evaluate system information.
The API description does not appear to be complete yet, so productive use is not possible.