public JenkinsServer updateJob(String jobName, String jobXml, boolean crumbFlag) throws IOException {
        return updateJob(null, jobName, jobXml, crumbFlag);
    }
public JenkinsServer updateJob ( String jobName , String jobXml , boolean crumbFlag ) throws IOException { return updateJob ( null , jobName , jobXml , crumbFlag ) ; }
Update the xml description of an existing job

@param jobName name of the job to be updated.
@param jobXml the configuration to be used for updating.
@param crumbFlag true/false.
@throws IOException in case of an error.