Angular UI Bootstrap Popover - How close all opened popover - angularjs

Question

I've a table with a popover for every cell as in the follow example:
the call to popover:
<td ng-repeat="i in c.installments" ng-class="{ 'first' : i.first, 'last' : i.last, 'advance' : i.advance.value > 0, 'edited' : i.edited, 'final-installment' : i.last }" popover-trigger="{{ popoverFilter(i) }}" popover-placement="top" popover-title="{{i.id == 0 ? 'Advance' : 'Installment ' + i.id}}" popover-append-to-body="true" popover-template="popoverTemplate(i)" ng-init="payment= i; newpayment= i.amount.rounded_value" >
The popover template:
<script type="text/ng-template" id="editPopoverTemplate.html">
<form name="editPayment">
<h2>{{payment.amount.value|currency:undefined:cents}}</h2>
<div class="form-group" ng-class="{ 'has-error' : editPayment.newpayment.$invalid }">
<label>New value:</label>
<input type="number" name="newpayment" ng-model="newpayment" class="form-control no-spinner" step="1" min="10" required>
<span ng-messages="editPayment.newpayment.$error" class="help-block" role="alert">
<span ng-message="required">The value is mandatory</span>
<span ng-message="min">The value is too low</span>
<span ng-message="max">The value is too hight</span>
</span>
</div>
<div class="btn-group btn-group-justified" role="group">
<div class="btn-group" role="group">
<button class="btn" type="button">Cancel</button>
</div>
<div class="btn-group" role="group">
<button class="btn btn-primary" type="button" ng-disabled="editPayment.$invalid">Save</button>
</div>
</div>
</form>
</script>
working example on plunker
I need to close all opened popover when new popover is open.
I need only a popover open.
It's possible? I need to extend the Angular UI Bootstrap library to do that?
Any help is appreciated.
The solution suggested in the linked answer below allow two popover open but i need to have only one popover opened, when a popover is open the other (opened) must be closed.

Answer 1

Starting in release 0.13.4, we've added the ability to programmatically open and close a tooltip and popover via the tooltip-is-open or popover-is-open boolean property. Via this, you can easily open and close your tooltips and popover on demand.