assertEquals(true,pc.hasNextPage());
assertEquals(false,pc.hasPrevPage());
res = pc.page(1, 5, "id");
assertEquals(true,pc.hasNextPage());
assertEquals(true,pc.hasPrevPage());
res = pc.page(4, 5, "id");
assertEquals(false,pc.hasNextPage());
assertEquals(true,pc.hasPrevPage());
res = pc.page(10, 5, "id");
assertEquals(false,pc.hasNextPage());