当覆盖率太低时，如何使Jenkins stage失败并变为红色(使用C#和dotnet测试)？

pipeline {
    agent any
    
    stages {
        stage('Build') {
            steps {
                // 构建代码步骤
            }
        }
        
        stage('Test') {
            steps {
                // 运行C#和dotnet测试
                sh 'dotnet test --collect:"XPlat Code Coverage"'

                // 判断覆盖率是否满足要求
                script {
                    def coverageThreshold = 70
                    def coverageXmlPath = 'path/to/coverage.xml'
                    
                    def coverage = readFile(coverageXmlPath).toString().toFloat()
                    
                    if (coverage >= coverageThreshold) {
                        currentBuild.result = 'SUCCESS'
                        echo "Coverage is ${coverage}%, meets the threshold."
                    } else {
                        currentBuild.result = 'FAILURE'
                        error "Coverage is only ${coverage}%, lower than the threshold."
                    }
                }
            }
        }
    }
    
    post {
        always {
            // 发送通知
            // 可以添加邮件通知或Slack通知等
        }
    }
}