code: async def create(cls, block_device: BlockDevice, size: int):
          
          params = {}
          if isinstance(block_device, BlockDevice):
              params['system_id'] = block_device.node.system_id
              params['device_id'] = block_device.id
          else:
              raise TypeError(
                  'block_device must be a BlockDevice, not %s' % (
                      type(block_device).__name__))
  
          if not size:
              raise ValueError("size must be provided and greater than zero.")
          params['size'] = size
          return cls._object(await cls._handler.create(**params))
docs: Create a partition on a block device.
  
          :param block_device: BlockDevice to create the paritition on.
          :type block_device: `BlockDevice`
          :param size: The size of the partition in bytes.
          :type size: `int`