[xwiki-users] How to get The jobExecutor

Hi, I wanted to use the snip from page http://extensions.xwiki.org/xwiki/bin/view/Extension/Job+Module .... Request jobRequest = new DefaultRequest(); // Indicate an id to allow you to access the status of this unique task, the id is required to save/retrieve the status of the job jobRequest.setId("taskid"); // Allow the job to ask questions during its executing (false by default) jobRequest.setInteractive(true); // [since 5.4] Indicate if the job should log informations about what is going on (to display it during the process for example, true by default) jobRequest.setVerbose(true); // Put some custom configuration jobRequest.setProperty("some custom jobtype related parameter", "value"); // Lookup and execute Job with role hint "jobtype" and wait for it to be finished jobManager.executeJob("jobtype", request) // Lookup and add Job with role hint "jobtype" to the queue queue and return right away Job job = jobManager.addJob("jobtype", request) // Wait until the job is finished job.join() .. to be able to create my own job and job request. But how is the jobManager injected? When I use the snip, the the jobManager is null.