="special">;</span>
    <span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special">&lt;</span> <span class="keyword">double</span> <span class="special">&gt;&amp;</span> <span class="identifier">m_times</span><span class="special">;</span>

    <span class="identifier">push_back_state_and_time</span><span class="special">(</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span cla