AI-generated Key Takeaways
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          The AccountTransfer API is the main entry point for account transfer operations. 
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          AccountTransferClient provides APIs for authenticators to bootstrap accounts. 
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          Account transfer status codes are used to indicate the completion status and potential errors. 
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          DeviceMetaData contains information about the source device and authenticator challenge allowance. 
Annotations
| AuthenticatorTransferCompletionStatus | Status for account transfer. | 
Classes
| AccountTransfer | Main entry point for AccountTransfer API's. | 
| AccountTransferClient | Contains api's used by authenticators for bootstrapping accounts. | 
| AccountTransferStatusCodes | Account Transfer specific status codes, for use in Status#getStatusCode(). | 
| DeviceMetaData | Contains meta information like source device auth info and whether an authenticator is allowed to throw challenge. | 
Exceptions
| AccountTransferException | An Exceptionthrown in case of error during account transfer operations. |