memento.set("someBookmark", new Bookmark("CUS", "12345"));
memento.set("someNullValue", null);
memento.set("someEnum", DOW.Wed);
final String str = memento.asString();
final Memento memento2 = mementoService.parse(str);
assertThat(memento2.get("someString", String.class), is("a string"));
assertThat(memento2.get("someStringWithDoubleSpaces", String.class), is("a string"));