| 1 | <?php declare(strict_types=1);  | 
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| 15 | class UpgradeRequired extends ClientError  | 
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| 16 | { | 
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| 17 | /**  | 
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| 18 | * Construct a new 'Upgrade Required' exception.  | 
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| 19 | *  | 
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| 20 | * @param string[] $protocols A list of supported protocols the client should select from before retrying the request.  | 
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| 21 | * @param string[][] $headers Additional headers associated with the exception.  | 
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| 22 | */  | 
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| 23 | 5 | public function __construct(array $protocols, array $headers = [])  | 
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| 32 | }  | 
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| 33 |