angularjs - AngularUI - Accordion trigger a method inside the template using ng-click -

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i'm using angularui bootstrap library templates. i'm wainting call custom method inside template , wondering need in order working? guess i'm wanting replace ng-click="isopen = !isopen" own custom method if possible.

thanks in advance.

       <div class="panel panel-default">\n  <div class="panel-heading">\n            <h4 class="panel-  title">\n              <a class="accordion-toggle" ng-click="isopen = !isopen" accordion- transclude="heading">{{heading}}</a>\n    </h4>\n          </div>\n          <div class="panel-collapse" collapse="!isopen">\n      <div class="panel-body" ng-transclude></div>\n          </div>\n</div>

since clicking on toggle changes value of isopen, can watch , apply logic without changing ng-click attribute

$scope.$watch('isopen', function(value) {   if (value) {     // code   } });

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