Using Jenkins Job-DSL plugin to create a job with a Post-Build Step / publisher plugin

my-job-generator.groovy

job('my-generated-job') {
  description('This job was automatically generated by a Job-DSL seed job')
  steps {
    shell('echo Testing Job-DSL and log-parser')
  }
  wrappers {
    colorizeOutput('xterm')
  }
  // Use configure to add the 'publishers' XML node in the generated config.xml
  configure { project ->
    project / publishers << 'hudson.plugins.logparser.LogParserPublisher'(plugin: 'log-parser@1.0.8') {
      unstableOnWarning(false)
      failBuildOnError(true)
      parsingRulesPath('/Users/Shared/Jenkins/Home/log-parser/test.txt')
    }
  }
}