xternal=true#computeIfPresent(K,java.util.function.BiFunction)" title="class or interface in java.util" class="externalLink">computeIfPresent</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true#containsKey(java.lang.Object)" title="class or interface in java.util" class="externalLink">containsKey</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.util" class="externalL