i class="tsd-description"><div class="tsd-comment tsd-typography"><p>Returns whether the given key is in this Map.</p>
</div><div class="tsd-parameters"><h4 class="tsd-parameters-title">Parameters</h4><ul class="tsd-parameter-list"><li><h5><span class="tsd-kind-parameter">key</span>: <a class="tsd-signature-type tsd-kind-type-parameter" href="Map.html#constructor.new_Map.K-1">K</a></h5><div class="tsd-comment tsd-typography"><p>The key to look up in the Map.</p>
</div></li></ul></div><h4 class="tsd-returns-