dbus-list-activatable-names
dbus-list-activatable-names is a compiled Lisp function in `dbus.el
'.
(dbus-list-activatable-names &optional BUS)
Return the D-Bus service names which can be activated as list.
If BUS is left nil, `:system' is assumed. The result is a list
of strings, which is `nil' when there are no activatable service
names at all.