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# HistoryTransaction

```
protocol HistoryTransaction : Hashable, Identifiable, Sendable
```

## Topics

### Associated Types

[`associatedtype TokenType : Comparable, Hashable, Identifiable, Sendable`](/documentation/SwiftData/HistoryTransaction/TokenType)

[`associatedtype TransactionIdentifier : Comparable, Hashable, Sendable`](/documentation/SwiftData/HistoryTransaction/TransactionIdentifier-swift.associatedtype)

### Instance Properties

[`var author: String?`](/documentation/SwiftData/HistoryTransaction/author)

[`var changes: [HistoryChange]`](/documentation/SwiftData/HistoryTransaction/changes)

[`var storeIdentifier: String`](/documentation/SwiftData/HistoryTransaction/storeIdentifier)

[`var timestamp: Date`](/documentation/SwiftData/HistoryTransaction/timestamp)

[`var token: Self.TokenType`](/documentation/SwiftData/HistoryTransaction/token)

[`var transactionIdentifier: Self.TransactionIdentifier`](/documentation/SwiftData/HistoryTransaction/transactionIdentifier-swift.property)

## Relationships

### Conforming Types

[`DefaultHistoryTransaction`](/documentation/SwiftData/DefaultHistoryTransaction)

### Inherits From

[`Sendable`](/documentation/Swift/Sendable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Identifiable`](/documentation/Swift/Identifiable)

[`Hashable`](/documentation/Swift/Hashable)

[`Equatable`](/documentation/Swift/Equatable)

---

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