final TripleHandler verifierTripleHandler = Mockito.mock(TripleHandler.class);
compositeTripleHandler.addChild(verifierTripleHandler);
final CountingTripleHandler countingTripleHandler = new CountingTripleHandler();
compositeTripleHandler.addChild(countingTripleHandler);
final ByteArrayOutputStream out = new ByteArrayOutputStream();
compositeTripleHandler.addChild( new NTriplesWriter(out) );
final ExtractionResult extractionResult = new ExtractionResultImpl(
extractionContext, extractor, compositeTripleHandler
);
extractor.run(extractionParameters, extractionContext, is, extractionResult);
compositeTripleHandler.close();