Is there Multimap in Kotlin? : <p>I need to store values in map likie this:</p>

<pre><code> val map = HashMap&lt;String, Set&lt;String&gt;&gt;()
</code></pre>

<p>But it is hard to interact with Set inside the map.</p>

<p>Is there any multimap implementations in Kotlin like <a href="https://google.github.io/guava/releases/19.0/api/docs/com/google/common/collect/Multimap.html" rel="noreferrer"> Multimap in Google Guava</a>?</p>
