Function list_start_after 

pub(crate) fn list_start_after(path: &str, version: ManifestVersion) -> String

Returns a lexicographic start_after key for an object-store list request over the manifest directory at path.

path must be the same directory prefix passed to lister_with(path) and must end with /. OpenDAL resolves start_after against the operator root, not relative to the listed path, so the caller must supply the full prefix — otherwise the bound is compared against keys that already share a longer prefix and is silently a no-op.