Implementing Transactions

[LubieKakao1212]

Hi I am trying to implement something similar to fabric-transfer-api and I encountered a concept level issue. I wanted to ask how it's delt with in fabric. I can't figure that out from reading the source.

The issue is as follows:
You have a block which has provides an interface exposing some value, however this value is defined by the state of an item in the block's inventory.

How would I go about implementing a setter for that value so it correctly supports transaction rollbacks?

The problem is the block doesn't have a transaction aware storage implemented by itself, but rather has an inventory which can be wrapped in a storage.