((MyVariableSerializable) processInstance.getVariable( "z" )).getText() );
assertNull( processInstance.getVariable( "a" ) );
assertNull( processInstance.getVariable( "b" ) );
assertNull( processInstance.getVariable( "c" ) );
service.dispose();
// log.info("### Completing first work item ###");
// ksession.getWorkItemManager().completeWorkItem( workItem.getId(), null );
//
// workItem = handler.getWorkItem();