<?php

        $repository = $this->getContainer()->get('ezpublish.api.repository');
        $repository->getPermissionResolver()->setCurrentUserReference(new UserReference(14));

        $objectStateService = $this->getContainer()->get('ezpublish.api.service.object_state');

        $createStruct = $objectStateService->newObjectStateGroupCreateStruct('test_osg');
        $createStruct->defaultLanguageCode = 'eng-GB';
        $createStruct->names = [$createStruct->defaultLanguageCode => 'test_osg'];

        $objectStateGroup = $objectStateService->createObjectStateGroup($createStruct);

        $objectStates = $objectStateService->loadObjectStates($objectStateGroup);
        $output->write(print_r($objectStates, true));

        $createStruct = $objectStateService->newObjectStateCreateStruct('test_os1');
        $createStruct->defaultLanguageCode = 'eng-GB';
        $createStruct->names = [$createStruct->defaultLanguageCode => 'test_os1'];

        $objectStateService->createObjectState($objectStateGroup, $createStruct);

        $objectStates = $objectStateService->loadObjectStates($objectStateGroup);
        $output->write(print_r($objectStates, true));