assertEquals(author.getName(),"a");
assertEquals(author.getEmail(), "b");
assertEquals(author.getUri().toString(), "c");
Category category = factory.newCategory();
assertNotNull(category);
category = factory.newCategory();
category.setScheme("a");
category.setTerm("b");
category.setLabel("c");
assertNotNull(category);
assertEquals(category.getScheme().toString(), "a");