import Collapse from 'ember-bootstrap/components/base/bs-collapse';

export default Collapse.extend({
  classNameBindings: ['collapse', 'showContent:show', 'collapsing']
});

@@ -121,20 +121,8 @@
 s: %5B
-'collapse', 
 'sho
@@ -139,22 +139,8 @@
 how'
-, 'collapsing'
 %5D%0A%7D)

Remove redundant class name bindings in BS4.