ken punctuation">(</span><span class="token string">'it buffers messages'</span><span class="token punctuation">,</span> <span class="token keyword">function</span><span class="token punctuation">(</span><span class="token parameter">assert</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">let</span> service <span class="token operator">=</span> <span class="token keyword">this</span><span class="token punctuation">.</span>owner<span clas