code: public static <K, V> Configuration newMutable(TimeUnit expiryTimeUnit, long expiryDurationAmount) {
          return new MutableConfiguration<K, V>().setExpiryPolicyFactory(factoryOf(new Duration(expiryTimeUnit, expiryDurationAmount)));
      }
docs: Build a new mutable javax.cache.configuration.Configuration with an expiry policy
  @param expiryTimeUnit time unit
  @param expiryDurationAmount amount of time to wait before global cache expiration
  @param <K> Key type
  @param <V> Value type
  @return a new cache configuration instance