Here in Hessen we say #GUDE2020 
But one last question:
this is my item:
String DenonCommand "Denon Remote" { channel="denonmarantz:avr:0005cd3a0e8e:general#command" }
an now the Sitemap:
Switch item=DenonCommand icon="movecontrol" mappings=['MNMEN ON'="SETUP ON",'MNMEN OFF'="SETUP OFF",MNENT="ENTER"]
Switch item=DenonCommand icon="movecontrol" mappings=[MNCLT="⬅️",MNCUP="⬆️",MNCDN="⬇️",MNCRT="➡️"]
Switch item=DenonCommand icon="movecontrol" mappings=[MNRTN="BACK",MNINF="INFO",MNOPT="OPTION"]
And when i use all this my sitemap looks like that:
when i switch to Setup ON it looks like that:
So the actual Status of the command channel is shown in the Sitemap ???
Never see that anywhere.