code: def order_snapshot_space(self, volume_id, capacity, tier,
                               upgrade, **kwargs):
          
          block_mask = 'id,billingItem[location,hourlyFlag],'\
              'storageType[keyName],storageTierLevel,provisionedIops,'\
              'staasVersion,hasEncryptionAtRest'
          block_volume = self.get_block_volume_details(volume_id,
                                                       mask=block_mask,
                                                       **kwargs)
  
          order = storage_utils.prepare_snapshot_order_object(
              self, block_volume, capacity, tier, upgrade)
  
          return self.client.call('Product_Order', 'placeOrder', order)
docs: Orders snapshot space for the given block volume.
  
          :param integer volume_id: The id of the volume
          :param integer capacity: The capacity to order, in GB
          :param float tier: The tier level of the block volume, in IOPS per GB
          :param boolean upgrade: Flag to indicate if this order is an upgrade
          :return: Returns a SoftLayer_Container_Product_Order_Receipt