SP.WorkManagement.OM.CalloutInfo.successors property (sp.workmanagement)
Specifies tasks that depend on the current task
Applies to: apps for SharePoint | SharePoint Foundation 2013 | SharePoint Server 2013
var value = SP.WorkManagement.OM.CalloutInfo.get_successors()
SP.WorkManagement.OM.CalloutInfo.set_successors(value)