| 1 | <?php  | 
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| 10 | final class UnknownUserBackend implements BackendInterface  | 
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| 11 | { | 
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| 12 | |||
| 13 | /**  | 
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| 14 | * @param EmailAddress $mailbox  | 
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| 15 | * @return bool  | 
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| 16 | */  | 
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| 17 | public function contains(EmailAddress $mailbox): bool  | 
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| 21 | |||
| 22 | /**  | 
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| 23 | * @param EmailAddress $mailbox  | 
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| 24 | * @param MessageInterface $message  | 
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| 25 | */  | 
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| 26 | public function store(EmailAddress $mailbox, MessageInterface $message): void  | 
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| 30 | }  |