@Issue("JENKINS-26123")
 @Test
 public void noWait() throws Exception {
   j.createFreeStyleProject("ds").setAssignedLabel(Label.get("nonexistent"));
   WorkflowJob us = j.jenkins.createProject(WorkflowJob.class, "us");
   us.setDefinition(new CpsFlowDefinition("build job: 'ds', wait: false"));
   j.assertBuildStatusSuccess(us.scheduleBuild2(0));
 }
 private static Label getLabelWithoutCustomImage(Label label, String customDockerImage) {
   return Label.get(label.toString().replace(CUSTOM_IMAGE_SEPARATOR + customDockerImage, ""));
 }
 @Override
 public Label getAssignedLabel(SubTask task) {
   return Label.get(label);
 }