async def read(
        self,
        size: Annotated[
            int,
            Doc(
                """
                The number of bytes to read from the file.
                """
            ),
        ] = -1,
    ) -> bytes:
        """
        Read some bytes from the file.

        To be awaitable, compatible with async, this is run in threadpool.
        """
        return await super().read(size)

        Read some bytes from the file.

        To be awaitable, compatible with async, this is run in threadpool.
        
fastapi/datastructures.py