Jenkins scripted pipeline parallel execution

Jenkinsfile

node {
    stage ('clean') {
        cleanWs()
    }
    stage ('checkout') {
        git credentialsId: 'bla-bla-bla',
        url: 'git@bitbucket.org:kagarlickij/myapp-pipeline.git'
    }
    parallel admin: {
        stage ('myapp-admin-pipeline') {
            build 'myapp-admin-pipeline'
        }
    },
    front: {
        stage ('myapp-front-pipeline') {
            build 'myapp-front-pipeline'
        }
    }
}