Topic rebalance REST API: NPE for get status

[shangd]

In previous api I could do GET on /api/topic/rebalance to get the rebalance task status, now only POST is defined

POST /api/topic/rebalance

java.lang.NullPointerException
at ly.stealth.mesos.kafka.scheduler.Expr$.expandTopics(Expr.scala:168)
at ly.stealth.mesos.kafka.scheduler.http.api.TopicApiComponentImpl$TopicApiImpl.rebalance(TopicApi.scala:126)