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  "title" : "MusicSubscriptionOffer.MessageIdentifier"
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# MusicSubscriptionOffer.MessageIdentifier

An identifier for the main message that the subscription offer sheet
presents to the user.

```
struct MessageIdentifier
```

## Topics

### Initializers

[`init(String)`](/documentation/MusicKit/MusicSubscriptionOffer/MessageIdentifier/init(_:))

Creates a message identifier with the specified raw value.

[`init(rawValue: String)`](/documentation/MusicKit/MusicSubscriptionOffer/MessageIdentifier/init(rawValue:))

Creates a message identifier with the specified raw value.

### Type Properties

[`static let addMusic: MusicSubscriptionOffer.MessageIdentifier`](/documentation/MusicKit/MusicSubscriptionOffer/MessageIdentifier/addMusic)

An identifier for the message that invites the user to add music
to their library by subscribing to Apple Music.

[`static let join: MusicSubscriptionOffer.MessageIdentifier`](/documentation/MusicKit/MusicSubscriptionOffer/MessageIdentifier/join)

An identifier for the message that invites the user
to join Apple Music.

[`static let playMusic: MusicSubscriptionOffer.MessageIdentifier`](/documentation/MusicKit/MusicSubscriptionOffer/MessageIdentifier/playMusic)

An identifier for the message that invites the user to play music
by subscribing to Apple Music.

## Relationships

### Conforms To

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

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

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

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

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

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

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

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

---

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