t.html#iterator()" title="class or interface in java.util" class="external-link">iterator</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Set.html#remove(java.lang.Object)" title="class or interface in java.util" class="external-link">remove</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/Set.html#removeAll(java.util.Collection)" title="class or interface in java.util" class="external-link">removeAll</a>, <a href="https://docs.oracle.