### Question:
PageMetadata extends ModelWrapper { public Execution execution() { try { return new Execution( this, pageRoot().getPropertyValue( API.wasResultOf ).asResource() ); } catch (NullPointerException p) { System.err.println(">> null pointer exception in rendering result-of"); p.printStackTrace(System.err); throw p; } } PageMetadata( Page page ); RDFNodeWrapper pageRoot(); Execution execution(); QueryResult selectionQuery(); QueryResult viewingQuery(); Processor processor(); String sparqlEndpoint( VelocityContext context );  }### Answer:
@Test public void testExecution() { RDFNodeWrapper exec = page.metadata().execution(); assertNotNull( exec ); assertTrue( exec.isAnon() ); }