8 – CKEditor Bootstrap 4 plugin for accordion

I want to integrate Bootstrap Accordion to CKEditor in Drupal 8.

I created a custom module and linked the bootstrap plugin. When I got to edit the toolbar, the button shows there and I add it to the active toolbar. But in the actual create page, the button doesn’t show.

I used drupal console to create the module code.

I can confirm that the plugin.js file loads. I have tried this in a standalone(without Drupal) ckeditor install. And it works fine. Here is a working version. https://github.com/hirani89/ckeditor