@Test
    public void requireThatToStringWorks() {
        DocumentId docId = new DocumentId("id:this:is::a:test");
        DocumentRemove r = new DocumentRemove(docId);
        assertTrue(r.toString().contains(docId.toString()));
    }
@author <a href="mailto:einarmr@yahoo-inc.com">Einar M R Rosenvinge</a>
@since 5.1.10
document/src/test/java/com/yahoo/document/DocumentRemoveTestCase.java