public List query(WorkflowQuery query) throws WorkflowException {
public List query(WorkflowExpressionQuery query) throws WorkflowException {
    public List query(WorkflowQuery query) throws WorkflowException {        try {            return wf.query(query);        } catch (RemoteException e) {            log.error("Error querying", e);            throw new WorkflowException(e);        }    }