nal-link">getOrDefault</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Map.html#merge(K,V,java.util.function.BiFunction)" title="class or interface in java.util" class="external-link">merge</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Map.html#putIfAbsent(K,V)" title="class or interface in java.util" class="external-link">putIfAbsent</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Map.html#remov