* @param status_code e.g. "diag.bib1.1";
* @param target_name the name of the target for the diagnostic
* @param addinfo any additional information to include
*/
public void setDiagnosticStatus(String status_code, String target_name, String addinfo ) {
Diagnostic the_diagnostic = new Diagnostic(status_code, target_name, addinfo);
DiagnosticEvent e = new DiagnosticEvent(the_diagnostic);
setChanged();
notifyObservers(e);
}