protected void createDefaultEditPolicies() {
installEditPolicy(EditPolicyRoles.CREATION_ROLE,
new CreationEditPolicy());
super.createDefaultEditPolicies();
installEditPolicy(EditPolicyRoles.SEMANTIC_ROLE,
new ArrayInitializationByElements2ItemSemanticEditPolicy());
installEditPolicy(EditPolicyRoles.DRAG_DROP_ROLE,
new DragDropEditPolicy());
installEditPolicy(EditPolicyRoles.CANONICAL_ROLE,
new ArrayInitializationByElements2CanonicalEditPolicy());
installEditPolicy(EditPolicy.LAYOUT_ROLE, createLayoutEditPolicy());