ndex.html">NotEmptyMap</a> containing all the entries of this map, or an <a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-illegal-argument-exception/index.html">IllegalArgumentException</a> if this map is empty.</p></div><div class="symbol monospace"><span class="token keyword"></span><span class="token keyword">fun </span><span class="token operator">&lt;</span><span class="token keyword"></span><a href="../../kotools.types.collections/to-not-empty-map.html">K</a><span class="token punctuation