Gio.DBusProxy.g_default_timeout
DBusProxy.g_default_timeout: Number(gint) (Read / Write / Construct)
The timeout to use if -1 (specifying default timeout) is passed as @timeout_msec in the Gio.DBusProxy.prototype.call and Gio.DBusProxy.prototype.call_sync functions.
This allows applications to set a proxy-wide timeout for all remote method invocations on the proxy. If this property is -1, the default timeout (typically 25 seconds) is used. If set to %G_MAXINT, then no timeout is used.
Since 2.26