, or returns an encapsulated <a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin-stdlib/kotlin/-illegal-argument-exception/index.html">IllegalArgumentException</a> if this map is <a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin-stdlib/kotlin.collections/-map/is-empty.html">empty</a>.</p><br>
<details>
<summary>
    <b>Calling from Kotlin</b>
</summary><p class="paragraph">Here's an example of calling this function from Kotlin code:</p><div class="sample-container"><pre><code class="bloc