async fn build_backend_inner(
url: &str,
connection: &HashMap<String, String>,
local_file_access: &LocalFileAccess,
create_local_root: bool,
require_object_path: bool,
) -> Result<BuiltBackend>async fn build_backend_inner(
url: &str,
connection: &HashMap<String, String>,
local_file_access: &LocalFileAccess,
create_local_root: bool,
require_object_path: bool,
) -> Result<BuiltBackend>