code: public JenkinsServer renameJob(String oldJobName, String newJobName, Boolean crumbFlag) throws IOException {
          renameJob(null, oldJobName, newJobName, crumbFlag);
          return this;
      }
docs: Rename a job
  
  @param oldJobName existing job name.
  @param newJobName The new job name.
  @param crumbFlag <code>true</code> to add <b>crumbIssuer</b>
  <code>false</code> otherwise.
  @throws IOException In case of a failure.