* @param monitor
* @return feature ID filter
*/
private FidFilterImpl toFilter(Object obj, IProgressMonitor monitor) {
if (obj != null) {
final AdapterUtil adapterUtil = AdapterUtil.instance;
try {
return adapterUtil.adaptTo(FidFilterImpl.class, obj, monitor);
} catch (ClassCastException e) {
// Selection does not include a feature
// e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();