t><span class="section"><a href="rationale.html#id-1.3.37.9.3">Automatic Connection Management</a></span></dt>
<dt><span class="section"><a href="rationale.html#id-1.3.37.9.4"><code class="computeroutput">optional_last_value</code> as the Default Combiner</a></span></dt>
<dt><span class="section"><a href="rationale.html#id-1.3.37.9.5">Combiner Interface</a></span></dt>
<dt><span class="section"><a href="rationale.html#id-1.3.37.9.6">Connection Interfaces: +=  operator</a></span></dt>
<dt><span class="sectio