clarity of concept

Cockpit http://cockpit-project.org/ is hands down the easiest way to use DBus. For example, log into Cockpit, and type stuff like this in your javascript console to get a taste:

proxy = cockpit.dbus('org.freedesktop.hostname1').proxy()
proxy.Hostname
proxy.SetStaticHostname('mypinkpony.local', true)

You need Cockpit 0.31 or later. See here for a full example:

http://stef.thewalter.net/using-dbus-from-javascript-in-c...

... and here for full documentation:

http://files.cockpit-project.org/guide/latest/api-cockpit...