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