docs: public ElementDescription searchAndSelect(boolean showEmptySelectionError, Object... scope) {
  		try {
  			final List<ElementDescription> elements = findElements(scope, PlatformUI.getWorkbench().getProgressService());
  			ElementDescription element = null;
  			if (elements == null || elements.isEmpty()) {
  				if (showEmptySelectionError) {
  					SARLEclipsePlugin.getDefault().openError(getShell(),
  							Messages.AbstractSarlScriptInteractiveSelector_1,
  							MessageFormat.format(Messages.AbstractSarlScriptInteractiveSelector_2, getElementLabel()),
  							null);
  				}
  			} else if (elements.size() > 1) {
  				element = chooseElement(elements);
  			}  else {
  				element = elements.get(0);
  			}
  			return element;
  		} catch (InterruptedException exception) {
  			//
  		} catch (Exception exception) {
  			SARLEclipsePlugin.getDefault().openError(getShell(), Messages.AbstractSarlScriptInteractiveSelector_1, null,
  					exception);
  		}
  		return null;
  	}