code: func (v *AccelGroup) Connect(key uint, mods gdk.ModifierType, flags AccelFlags, f interface{}) {
  	closure, _ := glib.ClosureNew(f)
  	cl := (*C.struct__GClosure)(unsafe.Pointer(closure))
  	C.gtk_accel_group_connect(
  		v.native(),
  		C.guint(key),
  		C.GdkModifierType(mods),
  		C.GtkAccelFlags(flags),
  		cl)
  }
docs: // Connect is a wrapper around gtk_accel_group_connect().