protected function getParametersAliases()
    {
        return array(
            'user_id' => self::LTI_USER_ID,
            'oauth_consumer_key' => self::LTI_CONSUMER_KEY,
            'label' => OntologyRdfs::RDFS_LABEL,
            'oauth-key' => DataStore::PROPERTY_OAUTH_KEY,
            'oauth-secret' => DataStore::PROPERTY_OAUTH_SECRET,
            'oauth-callback-url' => DataStore::PROPERTY_OAUTH_CALLBACK,
        );
    }