async def METHOD_NAME(self, obj, importance: int = 0) -> ObjectInfo:
    serializer = AioSerializer(obj)
    buffers = await serializer.run()
    buffer_size = sum(getattr(buf, "nbytes", len(buf)) for buf in buffers)
    path = self._generate_path()
    file = await self._fs.open(path, "wb")
    async with file as f:
        for buffer in buffers:
            await f.write(buffer)
    return ObjectInfo(size=buffer_size, object_id=path)