What event is fired when an image is inserted using the image plugin?

Looking through the image.js code, I thought it would be "insertElement" but when I try to trigger something using

$('.myCkEditorDiv').ckeditorGet().on('insertElement', function(evt) {
    var test = evt; //this is just so I can set a breakpoint using Chrome Developer tools
}

the breakpoint isn't hit. What event should I be listening to?