gd.heightHint = 250;
tasksListViewer.getControl().setLayoutData(gd);
tasksListViewer.setContentProvider(new ArrayContentProvider(){
@Override
public Object[] getElements(Object inputElement) {
ModelingProject prj = (ModelingProject) inputElement;
return prj.getAllResources(AbstractTask.class).values().toArray();
}
});
tasksListViewer.setLabelProvider(new LabelProvider(){
@Override
public String getText(Object element) {