>m_messageBroker</span><span class="o">-&gt;</span><span class="n">subscribe</span><span class="p">(</span>
<span class="w">        </span><span class="p">[</span><span class="o">=</span><span class="p">](</span><span class="k">const</span><span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">string</span><span class="o">&amp;</span><span class="w"> </span><span class="n">message</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
<span class="