Job job = new Job("My job") { //$NON-NLS-1$
				

				@Override
				protected IStatus run(IProgressMonitor monitor) {
					try {
						collector.collectElements(monitor);
					} finally {
						synchronized (lock) {
							refresh = false;
						}
					}
					return Status.OK_STATUS;
				}
			};
			job.setPriority(Job.LONG);
			job.schedule();