//docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Set.html#add(E)" title="class or interface in java.util" class="external-link">add</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Set.html#addAll(java.util.Collection)" title="class or interface in java.util" class="external-link">addAll</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Set.html#clear()" title="class or interface in java.util" class="external-link">clear<