Describe the bundles for entity types.
array An associative array of all entity bundles, keyed by the entity type name, and then the bundle name, with the following keys:
hook_entity_bundle_info_alter()
Note: this list is generated by pattern matching, so it may include some functions that are not actually implementations of this hook.
function hook_entity_bundle_info() {
$bundles['user']['user']['label'] = t('User');
return $bundles;
}