Deprecation Warning

[Yelinz]

testem.js:1063 DEPRECATION: Please migrate from Ember._setComputedDecorator to Ember._setClassicDecorator [deprecation id: ember._setComputedDecorator]
        at logDeprecationStackTrace (http://localhost:7357/assets/vendor.js:36641:23)
        at HANDLERS.(anonymous function) (http://localhost:7357/assets/vendor.js:36735:11)
        at raiseOnDeprecation (http://localhost:7357/assets/vendor.js:36668:11)
        at HANDLERS.(anonymous function) (http://localhost:7357/assets/vendor.js:36735:11)
        at invoke (http://localhost:7357/assets/vendor.js:36747:11)
        at deprecate (http://localhost:7357/assets/vendor.js:36706:30)
        at Object.get (http://localhost:7357/assets/vendor.js:56387:50)
        at _computed (http://localhost:7357/assets/vendor.js:81602:13)
        at task (http://localhost:7357/assets/vendor.js:81656:14)

The _computed function in index.js uses _setComputedDecorator