 class="externalLink"><code>List</code></a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Set.html?is-external=true" title="class or interface in java.util" class="externalLink"><code>Set</code></a> or
 <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/SortedSet.html?is-external=true" title="class or interface in java.util" class="externalLink"><code>SortedSet</code></a> then the resulting collection will have a single entry mapped from the su