how to identify onCollapse completed event?

[deepgalley]

Hi All, I'm having a large set of data almost 2000 rows in table. I want to display progress bar or i need to do pagination while collapsing the row and once it is completed i want to disable the progressbar. Is there any way to handle this method like completed or success event exists?

$('.tree').on("change", function() {complete: function () {}});

Is there any way kindly update.