static bool ConfigureStream_cb(IntPtr inst, IntPtr caps)
 {
     try {
         IRTSPExtensionImplementor __obj = GLib.Object.GetObject(inst, false) as IRTSPExtensionImplementor;
         bool __result;
         __result = __obj.ConfigureStream(caps == IntPtr.Zero ? null : (Gst.Caps)GLib.Opaque.GetOpaque(caps, typeof(Gst.Caps), false));
         return(__result);
     } catch (Exception e) {
         GLib.ExceptionManager.RaiseUnhandledException(e, true);
         // NOTREACHED: above call does not return.
         throw e;
     }
 }