public static function scrutinize_event_names( $event ) {
		if ( ! self::event_name_is_valid( $event->_en ) ) {
			return;
		}

		$whitelisted_key_names = array(
			'anonId',
			'Browser_Type',
		);

		foreach ( array_keys( (array) $event ) as $key ) {
			if ( in_array( $key, $whitelisted_key_names, true ) ) {
				continue;
			}
			if ( ! self::prop_name_is_valid( $key ) ) {
				return;
			}
		}
	}