https://docs.atlassian.com/software/jira/docs/api/10.7.0/com/atlassian/jira/task/StatefulTaskProgressSink.html
StatefulTaskProgressSink (Atlassian Jira - Server 10.7.0 API)
declaration: package: com.atlassian.jira.task, class: StatefulTaskProgressSink
atlassian jiraserverapi