DBusConnection.sendMessageWithReplyFinish

Finishes an operation started with [gio.dbus_connection.DBusConnection.sendMessageWithReply].

Note that error is only set if a local in-process error occurred. That is to say that the returned #GDBusMessage object may be of type [gio.types.DBusMessageType.Error]. Use [gio.dbus_message.DBusMessage.toGerror] to transcode this to a #GError.

See this [server][gdbus-server] and [client][gdbus-unix-fd-client] for an example of how to use this low-level API to send and receive UNIX file descriptors.