APIUtilityVerifier IterativeVerifier BooleanVerifier NullVerifier HybridVerifier 

@Test public final void testMetaInfServicesLoad() throws Exception {
  ServiceLoader serviceLoader=ServiceLoader.load(FileTypeDetector.class);
  Iterator iterator=serviceLoader.iterator();
  assertTrue(iterator.hasNext());
  while (iterator.hasNext()) {
    FileTypeDetector fileTypeDetector=iterator.next();
    assertNotNull(fileTypeDetector);
    assertTrue(fileTypeDetector instanceof TikaFileTypeDetector);
  }
}