@Override
    @CanIgnoreReturnValue
    public DistributedCacheManager<K, V, PublisherIdentifier> set(final K key,
                                                                  final V item,
                                                                  final boolean publish) {
        this.mapInstance.put(buildKey(key), item);
        return this;
    }
(Distributed) map instances that holds the data.
core/cas-server-core-util-api/src/main/java/org/apereo/cas/util/cache/MappableDistributedCacheManager.java