 Jackson'</span><span class="token punctuation">,</span>
  <span class="token function">addItem</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">this</span><span class="token punctuation">.</span>shoppingList<span class="token punctuation">.</span><span class="token function">pushObject</span><span class="token punctuation">(</span><span class="token string">'sausage'</span><span class="token punct