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# init(userIdentityLookupInfos:)

Creates an operation for discovering the user identities of the specified lookup infos.

```
convenience init(userIdentityLookupInfos: [CKUserIdentity.LookupInfo])
```

## Parameters

`userIdentityLookupInfos`

An array that contains instances of [`CKUserIdentity.LookupInfo`](/documentation/CloudKit/CKUserIdentity/LookupInfo-swift.class). CloudKit uses this parameter as the default value for the [`userIdentityLookupInfos`](/documentation/CloudKit/CKDiscoverUserIdentitiesOperation/userIdentityLookupInfos) property. If you specify `nil`, you must assign a value to that property before you execute the operation.

## Discussion

After you create the operation, assign a handler to [`discoverUserIdentitiesCompletionBlock`](/documentation/CloudKit/CKDiscoverUserIdentitiesOperation/discoverUserIdentitiesCompletionBlock) so that you can process the search results.

---

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