ype parameter in AbstractMultivaluedMap">K</a>&nbsp;key)</span></div>
<div class="block"><p>
 Return a non-null list of values for a given key. The returned list may be empty.
 </p>
 If there is no entry for the key in the map, a new empty <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link"><code>List</code></a> instance is created, registered within the map
 to hold the values of the key and returned from t