 keyword">default</span> <span class="token constant">DS</span><span class="token punctuation">.</span>Model<span class="token punctuation">.</span><span class="token function">extend</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span aria-hidden="true" class="line-numbers-rows"><a href="#C2_L1" id=C2_L1></a><a href="#C2_L2" id=C2_L2></a><a href="