question: private Optional < CuratorFramework > createClient ( String zookeeperUrl ) { if ( StringUtils . isNotBlank ( zookeeperUrl ) ) { CuratorFramework client = ConfigurationsUtils . getClient ( zookeeperUrl ) ; client . start ( ) ; return Optional . of ( client ) ; } else { return Optional . empty ( ) ; } }
target:  Creates a Zookeeper client.