function testSetUnset() { $propFind = new PropFind('foo', ['{DAV:}displayname']); $propFind->set('{DAV:}displayname', 'bar'); $propFind->set('{DAV:}displayname', null); $this->assertEquals([200 => [], 404 => ['{DAV:}displayname' => null]], $propFind->getResultForMultiStatus()); }