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| val BalanceSheetId: Lens[BalanceSheet, DatabaseID] = | |
| GenLens[BalanceSheet](_.id) | |
| def save(sheet: BalanceSheet): IO[DatabaseID] = ??? | |
| //Updates a given sheet with the new id from the database | |
| def store(sheet: BalanceSheet): IO[BalanceSheet] = | |
| save(sheet).map(BalanceSheetId.set(_)(sheet)) |
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