EDIT

import org.eclipse.ui.handlers.HandlerUtil;

import org.eclipse.ui.texteditor.IDocumentProvider;

import eu.etaxonomy.cdm.api.service.IAgentService;

import eu.etaxonomy.cdm.hibernate.HibernateProxyHelper;

import eu.etaxonomy.cdm.model.agent.Person;

import eu.etaxonomy.cdm.model.agent.Team;

import eu.etaxonomy.cdm.strategy.merge.MergeException;

	@Override

	public Person execute(ExecutionEvent event) throws ExecutionException {

		ISelection selection = HandlerUtil.getCurrentSelection(event);

		IEditorPart editor = HandlerUtil.getActiveEditor(event);

		IEditorInput input = editor.getEditorInput();

		if (editor.isDirty()){

			boolean proceed = MessageDialog.openQuestion(null,

			}

		}

		if((input instanceof IEntityPersistenceService) && (selection instanceof IStructuredSelection)){

			IDocumentProvider provider = ((BulkEditor) editor).getDocumentProvider();

					(LineAnnotationModel) provider.getAnnotationModel(input);

			IStructuredSelection structuredSelection = (IStructuredSelection) selection;

			IEntityPersistenceService persistenceService = (IEntityPersistenceService) input;

			Person person ;

			for(Object object : structuredSelection.toList()){

				LineAnnotation annotation = (LineAnnotation) model.getAnnotation(object);

				if (object instanceof Team){

					Team team = HibernateProxyHelper.deproxy(object, Team.class);

					try {

					} catch (IllegalArgumentException e) {

						MessagingUtils.informationDialog("Can not convert Team to Person", e.getMessage());

					} catch (MergeException e) {

				}else{

					MessagingUtils.informationDialog("Can not convert Team to Person", "convertTeam2Person can only be called on a team.");

				}

				if (person != null){

					((BulkEditor) editor).removeAnnotatedLine(annotation);

					((BulkEditor) editor).createAnnotatedLine(person);