public function testUnassignContentTypeGroupThrowsBadStateException()
{
/* BEGIN: Use Case */
$contentTypeService = $this->repository->getContentTypeService();
$folderType = $contentTypeService->loadContentTypeByIdentifier('folder');
$assignedGroups = $folderType->contentTypeGroups;
foreach ($assignedGroups as $assignedGroup) {
// Throws an exception, when last group is to be removed
$contentTypeService->unassignContentTypeGroup($folderType, $assignedGroup);
}
/* END: Use Case */
}