protected void createEditPolicies() {
installEditPolicy(EditPolicy.NODE_ROLE, null);
installEditPolicy(EditPolicy.GRAPHICAL_NODE_ROLE, null);
installEditPolicy(EditPolicy.SELECTION_FEEDBACK_ROLE, null);
installEditPolicy(EditPolicy.COMPONENT_ROLE, new FlowEditPolicy());
installEditPolicy(EditPolicy.LAYOUT_ROLE,
new FlowStateLayoutEditPolicy());
installEditPolicy(EditPolicy.CONTAINER_ROLE,
new StateContainerEditPolicy());
}