Viewing File: /usr/local/cpanel/share/libraries/cjt2/src/directives/actionButton.phtml

<button class="btn {{buttonClass}}"
        ng-class="ngClass()"
        ng-click="start()">
    <spinner id="{{spinnerId}}" glyph-class="fas fa-sync button-loading-indicator"></spinner>
    <span class="button-label" ng-transclude></span>
</button>