D-Bus GLib bindings - Reference Manual
for version 0.104
dbus-glib is a deprecated API for use of D-Bus from GLib applications. Do not use it in new code.
Since version 2.26, GLib's accompanying GIO library provides a high-level API for D-Bus, "GDBus", based on an independent reimplementation of the D-Bus protocol. The maintainers of D-Bus recommend that GLib applications should use GDBus instead of dbus-glib.