// find all books with the authors last name 'Asimov'.
asimov = new Author();
asimov.setLastName("Asimov");
Book seekBook = new Book();
seekBook.addAuthor(asimov);
List<Book> asimovBooks = persist.getObjects(Book.class, new Equal(seekBook));
assertEquals(2, asimovBooks.size());
// print the title of the scifi books
for (Book book : asimovBooks)
{