[Jenkins] stop all running jobs in multibranch

gistfile1.txt

import hudson.model.*

// get all running jobs
Jenkins.instance.getAllItems(AbstractItem.class).each { item ->
    if (item instanceof org.jenkinsci.plugins.workflow.job.WorkflowJob && item.fullName.contains("your-job")) {
        item.builds.each { build ->
            if (build.isBuilding()) {
                println "Stopping build: ${build.fullDisplayName}"
                build.doStop() // stop running job
            }
        }
    }
}