openWindow(title, 480, 630, new AddRoleAssignmentWizard(this, type, principals, roles).asWidget());
}
public void addRoleAssignment(final RoleAssignment assignment) {
closeWindow();
ManagementOperation<Stack<Boolean>> mo = new ModifyRoleAssignmentOp(dispatcher, assignment, ADD);
mo.execute(new Outcome<Stack<Boolean>>() {
@Override
public void onFailure(final Stack<Boolean> context) {
Console.error(Console.MESSAGES.addingFailed("role assignment"));
loadAssignments();
}