from abc import ABC, abstractmethod
from typing import Any, Sequence

from pytorch_ie.core import Document


class DocumentSerializer(ABC):
    """This defines the interface for a document serializer.

    The serializer should not return the serialized documents, but write them to disk and instead
    return some metadata such as the path to the serialized documents.
    """

    @abstractmethod
    def __call__(self, documents: Sequence[Document]) -> Any:
        pass