Jenkins 如何获取下游作业的执行状态代码

我正在从上游作业运行以下阶段。如何获取下游作业的返回状态代码-UI_测试_管道。我需要根据执行情况获取状态代码，如“0”或“1”，并执行一些验证。请分享信息

阶段（“运行测试”） {

       steps
        {
            script
            {
                    last_started = env.STAGE_NAME
                    def UI_TEST_PIPELINE_job_info = build(
                    job: "UI_TEST_PIPELINE",
                    parameters:
                    [
                        
                            $class: 'StringParameterValue', name: 'RELEASE_VERSION', value: "main"
                        ],
                        [
                            $class: 'StringParameterValue', name: 'ENVIRONMENT', value: "CI/CD"
                        ],
                                                   
                        [
                            $class: 'StringParameterValue', name: 'URL', value: "http://${env.HOSTNAME}:8001/ui"
                        ],
                        [
                            $class: 'StringParameterValue', name: 'SUITE_PATH', value: "Test Suites/QASuite/TestSuite"
                        ],

                        [
                            $class: 'StringParameterValue', name: 'EMAIL_LIST', value: "qa_all_grp@domain.com"
                        ],
                        [
                            $class: 'StringParameterValue', name: 'EMAIL_SUBJECT', value: "UI PIPELINE - $VAR"
                        ],
                        [
                            $class: 'StringParameterValue', name: 'USER_NAME', value: "admin"
                        ],
                        [
                            $class: 'StringParameterValue', name: 'PASSWORD', value: "welcome1"
                        ],
                        
                    ]
                    )
                     
          }
        }
    }
    }
    }