Zigbee2mqtt revisited: No more ugly transformations

How i can define Trigger type channel?
I try to use:

Type trigger  : action  "action"  [ stateTopic = "zigbee2mqtt/xiaomi_cube/action"]

but i have an error:
20:34:27.098 [ERROR] [l.thing.internal.GenericThingProvider] - Channel type mqtt:trigger could not be resolved.

I need to use it in rules like this:

when

Channel "mqtt:topic:be6e02f3:Cube:action" triggered

then