<?xml version='1.0' encoding='UTF-8'?>
<o class="object">
  <system_message/>
  <jenkins-model-MasterBuildConfiguration class="object">
    <numExecutors>1</numExecutors>
    <labelString>hello</labelString>
  </jenkins-model-MasterBuildConfiguration>
  <jenkins-model-GlobalQuietPeriodConfiguration class="object">
    <quietPeriod>10</quietPeriod>
  </jenkins-model-GlobalQuietPeriodConfiguration>
</o>