# from __future__ import annotations

# from typing import TYPE_CHECKING, Optional

# # from openghg.util import running_locally

# if TYPE_CHECKING:
#     from openghg.dataobjects import RankSources


# def rank_sources(site: str, species: str, service_url: Optional[str] = None) -> RankSources:
#     """Retrieve datasources for a specific site and species. Returns a RankSources
#     object that can be used to set and modify ranking data.

#     Args:
#         site: Site code
#         species: Species
#     Returns:
#         RankSources: A RankSources object
#     """
#     raise NotImplementedError
#     # from openghg.dataobjects import RankSources

#     # hub_or_cloud = not running_locally()
#     # ranker = RankSources(cloud=hub_or_cloud, service_url=service_url)
#     # ranker.get_sources(site=site, species=species)

#     # return ranker
