@Order(10)
          public class LanguageColumn extends AbstractSmartColumn<Locale> {

            @Override
            protected boolean getConfiguredEditable() {
              return true;
            }

            @Override
            protected String getConfiguredHeaderText() {
              return TEXTS.get("Language");
            }

            @Override
            protected int getConfiguredWidth() {
              return 80;
            }

            @Override
            protected Class<? extends ILookupCall<Locale>> getConfiguredLookupCall() {
              return (Class<? extends ILookupCall<Locale>>) LocaleLookupCall.class;
            }

            @Override
            protected ILookupCall<Locale> prepareLookupCall(ITableRow row, final Locale key) {
              //'de' is special
              if (key != null && key.getLanguage().equals("de")) {
                //use special fixed text override, so emulate a single lookup row with the desired values
                ILookupCall<Locale> lookupCall = new LocalLookupCall<Locale>() {
                  @Override
                  protected List<? extends ILookupRow<Locale>> execCreateLookupRows() {
                    return Collections.singletonList(new LookupRow<Locale>(key, "Foo Bar"));
                  }
                };
                lookupCall.setKey(key);
                return lookupCall;
              }
              else {
                return super.prepareLookupCall(row, key);
              }
            }

            @Override
            protected void execDecorateCell(Cell cell, ITableRow row) {
              final Locale key = this.getValue(row);
              //'de' is special, disable cell
              if (key != null && key.getLanguage().equals("de")) {
                cell.setEditable(false);
              }
            }
          }