what happened with graphviz and what is the alternative now?

[bartplessers]

Hi,

In the past, I used some custom code to visualize my zigbee network.
Code is depricated, but still can be found on https://github.com/rgruebel/ha_zigbee2mqtt_networkmap

Main principle of this code: just publish the message
graphviz
to mqtt topic
zigbee2mqtt/bridge/networkmap/routes

and after a while you received your networktopology on the mqtt broker in a format that could be rendered with viz.js javascript framework.
This resulted in something like

So far so good.

However, I noticed that zigbee2mqtt 2.1.1, I don't get any resonse if I post the 'graphviz" message to my broker.

According to the documentation, I now have to publish 'graphviz' to following topic
zigbee2mqtt/bridge/request/networkmap

However, no response is generated.

Is this a bug?