How to programatically open the ion-option-buttons on ion-items

ionic-v1
1

Inside my Ionic application, Let’s say I have an ion-list with some ion-items inside like this:

<ion-list>
  <ion-item>
    I love kittens!
    <ion-option-button class="button-positive">Share</ion-option-button>
    <ion-option-button class="button-assertive">Edit</ion-option-button>
  </ion-item>

  // Some other items in the list

</ion-list>

I want to programmatically (e.g click of a button), open up the option menu on all the items. Same effect as if the user has swiped all the items to the left simultaneously.

I was not able to find any documentation on this. How can I achieve that?