import org.jenkinsci.plugins.pipeline.modeldefinition.Utils
node(label) {
    stage("A"){
        echo("A")
    }

    stage("B"){
        parallel(
            "B1": {
                stage("B1.1"){
                    Utils.markStageSkippedForConditional("B1.1")
                }
            },

            "B2": {
                stage("B2.1"){
                    echo("B2.1")
                }
                stage("B2.2"){
                    echo("B2.1")
                }
            },
            "B3": {
                stage("B3.1"){
                    echo("B2.1")
                }
                stage("B3.2"){
                    Utils.markStageSkippedForConditional("B3.2")
                }
            },
            "B4": {
                stage("B4.1"){
                    Utils.markStageSkippedForConditional("B4.1")
                }
                stage("B4.2"){
                    Utils.markStageSkippedForConditional("B4.2")
                }
            },
        )
    }

    stage("C"){
        echo("C")
    }