Use of History

[Lin_Xue]

In ACT_HI_ACTINST tabale，I want to query all data through the "PARENT_ACT_INST_ID_ " field,
How to call the api？

List<HistoricActivityInstance> userTask = historyService.createHistoricActivityInstanceQuery()
                .activityInstanceId("Activity_09sing4:3ea9bc35-7cc3-11eb-9edb-0242ac120009")
                .finished()
                .list();

This code can only find one piece of data, not the result I want。