code: def save(self, destination: BinaryIO, buffer_size: int=16384) -> None:
          
          close_destination = False
          if isinstance(destination, str):
              destination = open(destination, 'wb')
              close_destination = True
          try:
              copyfileobj(self.stream, destination, buffer_size)
          finally:
              if close_destination:
                  destination.close()
docs: Save the file to the destination.
  
          Arguments:
              destination: A filename (str) or file object to write to.
              buffer_size: Buffer size as used as length in
                  :func:`shutil.copyfileobj`.