sc.addAuthRole(ROLE);
sc.addCollection(collection);
ctxt.addConstraint(sc);
// Configure the Realm
MapRealm realm = new MapRealm();
realm.addUser(USER, PWD);
realm.addUserRole(USER, ROLE);
ctxt.setRealm(realm);
// Configure the authenticator
LoginConfig lc = new LoginConfig();
lc.setAuthMethod("DIGEST");