A #GDBusConnection.
The name (well-known or unique) to watch.
Flags from the #GBusNameWatcherFlags enumeration.
#GClosure to invoke when name is known to exist or null.
#GClosure to invoke when name is known to not exist or null.
An identifier (never 0) that can be used with gio.global.busUnwatchName to stop watching the name.
Version of gio.global.busWatchNameOnConnection using closures instead of callbacks for easier binding in other languages.