~$ cat .local/share/dbus-1/services/de.uebernic.terminals.irssi.service 
[D-BUS Service]
Name=de.uebernic.terminals.irssi
Exec=/usr/lib/gnome-terminal/gnome-terminal-server --app-id de.uebernic.terminals.irssi

~$ cat .local/share/applications/de.uebernic.terminals.irssi.desktop 
[Desktop Entry]
Name=Irssi
Exec=gnome-terminal --app-id de.uebernic.terminals.irssi --profile=Irssi
Icon=irssi
Type=Application
StartupNotify=true