@@ -31,7 +31,7 @@  | 
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| 31 | 31 | *  | 
                                                        
| 32 | 32 | * Follows the procedure described here: https://developer.github.com/webhooks/securing/  | 
                                                        
| 33 | 33 | *  | 
                                                        
| 34 | - * @return bool Returns true if the request is authentic. False otherwise.  | 
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| 34 | + * @return null|boolean Returns true if the request is authentic. False otherwise.  | 
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| 35 | 35 | */  | 
                                                        
| 36 | 36 | public function isAuthentic()  | 
                                                        
| 37 | 37 |      { |