on">.</span>Helper<span class="token punctuation">.</span><span class="token function">extend</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
  <span class="token literal-property property">authentication</span><span class="token operator">:</span> Ember<span class="token punctuation">.</span>inject<span class="token punctuation">.</span><span class="token function">service</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span clas