我尝试在Jenkins代理节点中运行groovy脚本，以从Jenkins代理节点中的文件夹中检索子作业。下面是我尝试的groovy脚本：
我尝试了一些这样的答案，发现groovy.lang.MissingPropertyException: No such property: jenkins for class: groovy.lang.Binding
但这解决不了我的问题。
请找到我尝试的代码：

import groovy.json.JsonSlurper
import groovy.json.JsonBuilder
import jenkins.model.*

static main(args){

    def childJobFolder = "childJob"
    def childJobNameList = []

    def env = System.getenv()

    // Setting the environment properties to variables.
    def jenkinsUsername = env.UAT_JENKINS_MY_USER
    def jenkinsPassword = env.UAT_JENKINS_MY_PASS

    def jsonSlurper = new JsonSlurper()

    // Getting the child job names from "childJob" folder
    Jenkins.instance.getItemByFullName(childJobFolder).allJobs.each{
        def childJobName = it.name.toString()
        if(childJobName.startsWith("job-")){
            childJobNameList.add(childJobName)
        }
    }

    println "\n" + "Child Jobs Available: " + childJobNameList + "\n"

}

字符串
以下是我在控制台中得到的内容：
被抓：groovy.lang.MissingPropertyException：无此属性：Jenkins for class：hudson3067346520259876246 groovy.lang.MissingPropertyException：No such property：Jenkins for class：hudson3067346520259876246 at hudson3067346520259876246.run（hudson3067346520259876246.groovy：17）Build step 'Execute Groovy script' marked build as failure
有人能帮我解决这个错误吗？