public void SetOnUndone( 
   Action callback
)

// Demonstrates how to use the <see cref="ArcGIS.Desktop.Editing.EditOperation"/> methods  <see
await QueuedTask.Run(() =>
  {
    // SetOnUndone, SetOnRedone and SetOnComitted can be used to manage 
    // external actions(such as writing to a log table) that are associated with 
    // each edit operation.

    //get selected feature and update attribute
    var selectedFeatures = MapView.Active.Map.GetSelection();
    var testInspector = new Inspector();
    testInspector.Load(selectedFeatures.ToDictionary().Keys.First(), selectedFeatures.ToDictionary().Values.First());
    testInspector["Name"] = "test";

    //create and execute the edit operation
    var updateTestField = new EditOperation() { Name = "Update test field" };
    updateTestField.Modify(testInspector);

    //actions for SetOn...
    updateTestField.SetOnUndone(() =>
    {
      //Sets an action that will be called when this operation is undone.
      Debug.WriteLine("Operation is undone");
    });

    updateTestField.SetOnRedone(() =>
    {
      //Sets an action that will be called when this edit operation is redone.
      Debug.WriteLine("Operation is redone");
    });

    updateTestField.SetOnComitted(b =>
    {
      // Sets an action that will be called when this edit operation is committed.
      Debug.WriteLine("Operation is committed");
    });

    if (!updateTestField.IsEmpty)
    {
      var result = updateTestField.Execute(); //Execute and ExecuteAsync will return true if the operation was successful and false if not
    }
  });