page.setUrl(new Utf8("http://foo.com"));
page.addToParsedContent(new Utf8("foo"));
page.putToOutlinks(new Utf8("foo"), new Utf8("bar"));
page.setContent(ByteBuffer.wrap("foo baz bar".getBytes()));
page.clear();
Assert.assertNull(page.getUrl());
Assert.assertEquals(0, page.getParsedContent().size());
Assert.assertEquals(0, page.getOutlinks().size());
Assert.assertNull(page.getContent());