pub fn fetch_tree(
db: &PlacesDb,
item_guid: &Guid,
target_depth: &FetchDepth,
) -> Result<Option<(BookmarkTreeNode, Option<Guid>, u32)>>pub fn fetch_tree(
db: &PlacesDb,
item_guid: &Guid,
target_depth: &FetchDepth,
) -> Result<Option<(BookmarkTreeNode, Option<Guid>, u32)>>