assertEquals(SC_PRECONDITION_FAILED, response.getStatusLine().getStatusCode());
violations = mapper.readValue(response.getEntity().getContent(),
new TypeReference<Set<UnprocessableEntityException.Violation>>() {
});
expected = new UnprocessableEntityException();
expected.addViolation("description", "não pode ser nulo");
expected.addViolation("link", "não pode ser nulo");
assertEquals(expected.getViolations(), violations);
bookmark = new Bookmark();
bookmark.setDescription("Google");