### Question:
SubTaskBuilder { public static final List<ProcessingJobSubTask> metaExtraction() { return Arrays.asList( new ProcessingJobSubTask(ProcessingJobSubTaskType.META_EXTRACTION, null)); }  static final List<ProcessingJobSubTask> thumbnailGeneration(); static final List<ProcessingJobSubTask> metaExtraction(); static final List<ProcessingJobSubTask> colourExtraction();  }### Answer:
@Test public void test_metaExtraction() { final List<ProcessingJobSubTask> subTasks = SubTaskBuilder.metaExtraction(); assertEquals (1, subTasks.size()); assertEquals (ProcessingJobSubTaskType.META_EXTRACTION, subTasks.get(0).getTaskType()); assertNull (subTasks.get(0).getConfig()); }