"/opennlp/tools/formats/leipzig-en.sample");
ObjectStream<DocumentSample> sampleStream =
new LeipzigDoccatSampleStream("en", 2, in);
DocumentSample doc1 = sampleStream.read();
assertEquals("en", doc1.getCategory());
DocumentSample doc2 = sampleStream.read();
assertEquals("en", doc2.getCategory());
DocumentSample doc3 = sampleStream.read();
assertEquals("en", doc3.getCategory());
DocumentSample doc4 = sampleStream.read();
assertEquals("en", doc4.getCategory());
assertNull(sampleStream.read());
}