fix(s3s-fs): lints

        let mut objects: Vec<Object> = default();

        let mut common_prefixes = std::collections::BTreeSet::new();

        if delimiter.is_some() {

        if let Some(delimiter) = delimiter {

            // When delimiter is provided, only list immediate contents (non-recursive)

            self.list_objects_with_delimiter(&path, prefix, delimiter.unwrap(), &mut objects, &mut common_prefixes)

            self.list_objects_with_delimiter(&path, prefix, delimiter, &mut objects, &mut common_prefixes)

                .await?;

        } else {

            // When no delimiter, do recursive listing (current behavior)