a unique or well-known bus name or null if connection is not a message bus connection
path of remote object
D-Bus interface to invoke method on
the name of the method to invoke
a GLib.Variant tuple with parameters for the method or null if not passing parameters
the expected type of the reply (which will be a tuple), or null
flags from the Gio.DBusCallFlags enumeration
the timeout in milliseconds, -1 to use the default timeout or G_MAXINT for no timeout
a Dex.FutureSet that resolves to a GLib.Variant. The Dex.Future containing the resulting Gio.UnixFDList can be retrieved with Dex.FutureSet.get_future_at with an index of 1.
Wrapper for Gio.DBusConnection.call_with_unix_fd_list.