*/
public static void main(String[] args) {
Keystone keystone = new Keystone(ExamplesConfiguration.KEYSTONE_AUTH_URL);
// access with unscoped token
Access access = keystone.tokens().authenticate(
new UsernamePassword(ExamplesConfiguration.KEYSTONE_USERNAME, ExamplesConfiguration.KEYSTONE_PASSWORD))
.execute();
// use the token in the following requests
keystone.setTokenProvider(new OpenStackSimpleTokenProvider(access.getToken().getId()));
Tenants tenants = keystone.tenants().list().execute();