public StepDataInterface getStepData() {
    return new ElasticSearchBulkData();
  }
@Test
  public void testGetStepData() {
    ElasticSearchBulkMeta esbm = new ElasticSearchBulkMeta();
    StepDataInterface sdi = esbm.getStepData();
    assertTrue( sdi instanceof ElasticSearchBulkData );
  }