hoge.groovy

def map = [:]

map["fuga"] = {
    stage('fuga') {
        node {
            sh "echo 'fuga'"
        }
    }
}

map["piyo"] = {
    stage('piyo') {
        node {
            sh "echo 'piyo'"
        }
    }
}

map.failFast = true

stage 'hoge'

timestamps {
    parallel map
}