langchain/document_loaders/blob_loaders/file_system.py/FileSystemBlobLoader/yield_blobs
class FileSystemBlobLoader:    def yield_blobs(
        self,
    ) -> Iterable[Blob]:
        """Yield blobs that match the requested pattern."""
        iterator = _make_iterator(
            length_func=self.count_matching_files, show_progress=self.show_progress
        )

        for path in iterator(self._yield_paths()):
            yield Blob.from_path(path)