SaveDelegate.connectSave

gulong connectSave(T)(T callback,  Flag!"After" after =  No.After) if (isCallable!T
    &&  is(ReturnType!T ==  bool)
   && (Parameters!T.length <  1 || (ParameterStorageClassTuple!T[0]  ==  ParameterStorageClass.none &&  is(Parameters!T[0] :  gio.task.Task)))
   && (Parameters!T.length <  2 || (ParameterStorageClassTuple!T[1]  ==  ParameterStorageClass.none &&  is(Parameters!T[1] :  panel.save_delegate.SaveDelegate)))
   &&  Parameters!T.length <  3)

Connect to Save signal.

This signal can be used when subclassing #PanelSaveDelegate is not possible or cumbersome. The default implementation of #PanelSaveDelegateClass.save_async() will emit this signal to allow the consumer to implement asynchronous save in a flexible manner.

The caller is expected to complete task with a boolean when the save operation has completed.

Parameters

`callback`	signal callback delegate or function to connect `bool callback(gio.task.Task task, panel.save_delegate.SaveDelegate saveDelegate)` `task` a #GTask (optional) `saveDelegate` the instance the signal is connected to (optional) `Returns` true if the operation was handled.
`after`	Yes.After to execute callback after default handler, No.After to execute before (default)

Returns

Signal ID