"comments_count" => changeset.comments.length,
"changes_count" => changeset.num_changes
}
-attrs["closed_at"] = changeset.closed_at unless changeset.is_open?
+attrs["closed_at"] = changeset.closed_at.xmlschema unless changeset.is_open?
changeset.bbox.to_unscaled.add_bounds_to(attrs, "_") if changeset.bbox.complete?
# user attributes