"""
Common data types and protocols for analysers.
"""
-from typing import Mapping, List, Any
+from typing import Mapping, List, Any, Union, Tuple
from ...typing import Protocol
from ...data.place_name import PlaceName
for example because the character set in use does not match.
"""
- def compute_variants(self, canonical_id: str) -> List[str]:
+ def compute_variants(self, canonical_id: str) -> Union[List[str], Tuple[List[str], List[str]]]:
""" Compute the transliterated spelling variants for the given
canonical ID.