I wirte a Jenkinsfile with Declarative Pipeline.

How to set gerrit event in "Triggers{}" .

https://stackoverflow.com/questions/46241935/how-to-add-gerrit-trigger-events-inside-jenkins-pipeline-code-inside-jenkinsfil

fuction in this page is script pipeline.

but ,how to in Declarative Pipeline?

when  in "Triggers{}" ,message "WorkflowScript: 11: Invalid trigger type "pipelineTriggers". Valid trigger types: [upstream, cron, gerrit, githubPush, pollSCM] @ line 11, column 5."

triggers{
pipelineTriggers([
scm('H/6 * * * *')
])
}

Valid trigger include gerrit,but 

tiggers{

 gerrit(..)

}

erorr fow ever.