public <K, V> V get(String map, K key) {
		IMap<K, V> distMap = hazelcastInstance.getMap(map);
		checkNotNull(distMap, "Cache(" + map +") is not exist");
		return distMap.get(key);
	}
For support data clustering using hazelcast instance.

@since 3.5.0
ngrinder-controller/src/main/java/org/ngrinder/infra/hazelcast/HazelcastService.java