Vertex TTL does not remove indexed value from ES mixed index

I Use hbase as storage Backend,and ES as Index Backend, By setting Vertex ttl,data in hbase can be automaticly removed, but corresponding index in es exist yet, how can i delete those corresponding index ?

No files, tests, or entry points are named. Start by tracing how HBase vertex TTL expiration relates to the Elasticsearch mixed index, then determine how corresponding indexed values should be removed; done means expired vertices no longer remain searchable in Elasticsearch.

Written by the indexing model from the issue text.