$content = $meta->getContentInstance($content->entry->content->params->name);
 $content_obj = new MetaContent();
 $content_obj->from_entry($content);
 echo "\nRetrieved content instance with id = " . $content->entry->id . " and meta objs: ";
 foreach ($content_obj->get_meta_objs() as $m) {
     echo "\n- meta obj with vocab = {$m->vocab}, meta_name = {$m->meta_name}, text = {$m->text}, lang = {$m->lang}";
     if ($m->has_attrs()) {
         echo "\n   meta obj attrs:";
         foreach ($m->get_attrs() as $key => $value) {
             echo "\n   * {$key}:{$value}";
         }
     }
 }
 # Create content instance without meta objects for "/test/content/sintel.mp4"
 $content_obj2 = new MetaContent("sintel");
 $content_obj2->add_file_obj($item2->entry->content->params->path);
 $content = $meta->createContent($content_obj2->to_entry());
 echo "\nCreated new content instance with name = " . $content->entry->content->params->name . "\n";
 # Update content instance, adding meta objects
 $content_obj2->from_entry($content);
 $content_obj2->add_meta_obj("title", "media", "Sintel");
 $content_obj2->add_meta_obj("description", "media", "Sintel (code-named Durian) is a short computer animated film by the Blender Institute, part of the Blender Foundation.");
 $content_obj2->add_meta_obj("tag", "myvocab", "animation", "en");
 $content = $meta->updateContent($content_obj2->to_entry());
 echo "\nAdded meta objects to content instance with name = " . $content->entry->content->params->name . "\n";
 # search for content
 echo "\n\nGetting content list, search on 'iqmeta=blender' ...";
 $feed = $meta->getContentList('iqmeta=blender');
 foreach ($feed->feed->entry as $content_entry) {
     $content_obj = new MetaContent();
     $content_obj->from_entry($content_entry);