de></span></summary><dl><dt class="spec type" id="type-key"><a href="#type-key" class="anchor"></a><code><span class="keyword">type</span> key</code></dt><dt class="spec type" id="type-value"><a href="#type-value" class="anchor"></a><code><span class="keyword">type</span> value</code></dt><dt class="spec type" id="type-t"><a href="#type-t" class="anchor"></a><code><span class="keyword">type</span> t</code></dt></dl><dl><dt class="spec value" id="val-empty"><a href="#val-empty" class="anchor"></a><code><span