public Object execute(ExecutionEvent event) throws ExecutionException {
final ICommandService cs = (ICommandService) HandlerUtil.getActiveSite(
event).getService(ICommandService.class);
final Command command = cs
.getCommand(IWorkbenchCommandConstants.FILE_IMPORT);
final ExecutionEvent importEvent = new ExecutionEvent(command,
Collections.singletonMap("importWizardId", SessionImportWizard.ID), //$NON-NLS-1$
event.getTrigger(), event.getApplicationContext());
try {
command.executeWithChecks(importEvent);
} catch (CommandException e) {