# ICloudStoreObserver Protocol Reference

# ICloudStoreObserver

    @available(*, deprecated, message: "Please see the release notes and Core Data documentation.")
    public protocol ICloudStoreObserver : AnyObject

Implement the `ICloudStoreObserver` protocol to observe ubiquitous storage notifications from the specified iCloud store. Note that `ICloudStoreObserver` methods are only called when all the following conditions are true:

- the observer is registered to the `ICloudStore` via the `ICloudStore.addObserver(_:)` method
- the `ICloudStore` was added to a `DataStack`
- the `ICloudStore` and the `DataStack` are still persisted in memory

- `iCloudStoreWillFinishUbiquitousStoreInitialImport(storage:dataStack:)` Default implementation

  Notifies that the initial ubiquitous store import will complete

  #### Default Implementation

  #### Declaration

  Swift

      func iCloudStoreWillFinishUbiquitousStoreInitialImport(storage: ICloudStore, dataStack: DataStack)

  #### Parameters

  `storage` | the `ICloudStore` instance being observed
  `dataStack` | the `DataStack` that manages the peristent store

- `iCloudStoreDidFinishUbiquitousStoreInitialImport(storage:dataStack:)` Default implementation

  Notifies that the initial ubiquitous store import completed

  #### Default Implementation

  #### Declaration

  Swift

      func iCloudStoreDidFinishUbiquitousStoreInitialImport(storage: ICloudStore, dataStack: DataStack)

  #### Parameters

  `storage` | the `ICloudStore` instance being observed
  `dataStack` | the `DataStack` that manages the peristent store

- `iCloudStoreWillAddAccount(storage:dataStack:)` Default implementation

  Notifies that an iCloud account will be added to the coordinator

  #### Default Implementation

  #### Declaration

  Swift

      func iCloudStoreWillAddAccount(storage: ICloudStore, dataStack: DataStack)

  #### Parameters

  `storage` | the `ICloudStore` instance being observed
  `dataStack` | the `DataStack` that manages the peristent store

- `iCloudStoreDidAddAccount(storage:dataStack:)` Default implementation

  Notifies that an iCloud account was added to the coordinator

  #### Default Implementation

  #### Declaration

  Swift

      func iCloudStoreDidAddAccount(storage: ICloudStore, dataStack: DataStack)

  #### Parameters

  `storage` | the `ICloudStore` instance being observed
  `dataStack` | the `DataStack` that manages the peristent store

- `iCloudStoreWillRemoveAccount(storage:dataStack:)` Default implementation

  Notifies that an iCloud account will be removed from the coordinator

  #### Default Implementation

  #### Declaration

  Swift

      func iCloudStoreWillRemoveAccount(storage: ICloudStore, dataStack: DataStack)

  #### Parameters

  `storage` | the `ICloudStore` instance being observed
  `dataStack` | the `DataStack` that manages the peristent store

- `iCloudStoreDidRemoveAccount(storage:dataStack:)` Default implementation

  Notifies that an iCloud account was removed from the coordinator

  #### Default Implementation

  #### Declaration

  Swift

      func iCloudStoreDidRemoveAccount(storage: ICloudStore, dataStack: DataStack)

  #### Parameters

  `storage` | the `ICloudStore` instance being observed
  `dataStack` | the `DataStack` that manages the peristent store

- `iCloudStoreWillRemoveContent(storage:dataStack:)` Default implementation

  Notifies that iCloud contents will be deleted

  #### Default Implementation

  #### Declaration

  Swift

      func iCloudStoreWillRemoveContent(storage: ICloudStore, dataStack: DataStack)

  #### Parameters

  `storage` | the `ICloudStore` instance being observed
  `dataStack` | the `DataStack` that manages the peristent store

- `iCloudStoreDidRemoveContent(storage:dataStack:)` Default implementation

  Notifies that iCloud contents were deleted

  #### Default Implementation

  #### Declaration

  Swift

      func iCloudStoreDidRemoveContent(storage: ICloudStore, dataStack: DataStack)

  #### Parameters

  `storage` | the `ICloudStore` instance being observed
  `dataStack` | the `DataStack` that manages the peristent store