question: public static DefaultJobDefinition retryableFixedDelayJobDefinition ( final String jobType , final String jobName , final String description , final Duration fixedDelay , final int restarts , final int retries , final Optional < Duration > retryDelay , final Optional < Duration > maxAge ) { return new DefaultJobDefinition ( jobType , jobName , description , maxAge , Optional . of ( fixedDelay ) , Optional . empty ( ) , restarts , retries , retryDelay ) ; }
target:  Create a JobDefinition that is using fixed delays specify, when and how often the job should be triggered.