/**
     * Default constructor for the GenerateThumbnailJob.
     */
    public GenerateThumbnailJob() {
        super();
    }

    /**
     * Sets the number of threads to use for thumbnail generation.
     *
     * @param numOfThreads the number of threads
     * @return this job instance for method chaining
     */
    public GenerateThumbnailJob numOfThreads(final int numOfThreads) {

	</component>
	<component name="purgeLogJob" class="org.codelibs.fess.job.PurgeLogJob" instance="prototype">
	</component>
	<component name="generateThumbnailJob" class="org.codelibs.fess.job.GenerateThumbnailJob" instance="prototype">
	</component>
	<component name="purgeThumbnailJob" class="org.codelibs.fess.job.PurgeThumbnailJob" instance="prototype">
	</component>