我尝试在groovy阶段引用一个列表，如下所示：

stage('Post Build Actions') {
  emailext subject: "(Status ${currentBuild.result})", to: (['test1@test.co.uk', 'test2@test.co.uk']), body: '$DEFAULT_CONTENT'
}

但是，这会产生错误：

class hudson.plugins.emailext.EmailExtStep.setTo() expects class java.lang.String but received class java.util.ArrayList

我能不能把它修好？