*/
protected void createEditPolicies() {
installEditPolicy(EditPolicy.NODE_ROLE, null);
installEditPolicy(EditPolicy.GRAPHICAL_NODE_ROLE, null);
installEditPolicy(LocalDropRequest.REQ_LOCAL_DROP,
new LocalDropEditPolicy());
installEditPolicy(ItemCreationRequest.REQ_ITEM_CREATION,
new ItemCreationEditPolicy());
installEditPolicy(EditPolicy.PRIMARY_DRAG_ROLE,
new DragMoveEditPolicy());
}