Method replace

vm/JavaAPI/src/java/util/Map.java:303–303

Replaces the entry for the specified key only if currently mapped to the specified value.

(K key, V oldValue, V newValue)

     * the specified value.
     */
    default boolean replace(K key, V oldValue, V newValue) {
        Object curr = get(key);
        if (curr == null ? oldValue != null : !curr.equals(oldValue)) {
            return false;