Set labels on Jenkins steps.

Jenkinsfile

import  org.jenkinsci.plugins.workflow.actions.LabelAction;
import org.jenkinsci.plugins.workflow.cps.CpsThread;

pipeline {
    agent any

    stages {
        stage('Hello') {
            steps {
           script {
try {
    echo "do stuff"
}
finally {
   // context.get(FlowNode.class).addAction(new LabelAction(StringUtils.left(label, MAX_LABEL_LENGTH)));
     CpsThread.current().head.get().addAction(new LabelAction("Pipeline aborted, you silly!"))
}
               
           }
            }
        }
    }
}