title: Is there any practical application/use case when we create empty immutable list / set / map
body: <p>Java 9 provides as a way to create Empty immutable List, set and Map.</p>
  
  <pre><code>List list = List.of(); 
  Set set = Set.of(); 
  Map map = Map.of();
  </code></pre>
  
  <p>But I am not able understand what is the actual use case of creating an empty immutable list / set / map.</p>
  
  <p>Please help me to understand the actual use case of an empty immutable list / set / map.</p>