 <h2 id="ref-usage">Usage<a class="anchor" aria-label="anchor" href="#ref-usage"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">sum_lump</span><span class="op">(</span></span>
<span>  <span class="va">m</span>,</span>
<span>  threshold <span class="op">=</span> <span class="fl">1</span>,</span>
<span>  lump <span class="op">=</span> <span class="st">"flow"</span>,</span>
<span>  other_level <span class="op">=</span> <span class="st">"other"</span>,</span>
<span>