jenkins-job-builder/tests/builders/fixtures/critical-block.xml

<?xml version="1.0" encoding="utf-8"?>
<project>
  <builders>
    <org.jvnet.hudson.plugins.exclusion.CriticalBlockStart plugin="Exclusion"/>
    <org.jvnet.hudson.plugins.exclusion.CriticalBlockEnd plugin="Exclusion"/>
  </builders>
</project>