Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
| 1 | <?php  | 
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| 12 | class CategoryUrlPathChecker implements UrlPathUsedChecker  | 
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| 13 | { | 
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| 14 | /**  | 
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| 15 | * @var CategoryResolverInterface  | 
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| 16 | */  | 
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| 17 | private $categoryResolver;  | 
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| 18 | |||
| 19 | /**  | 
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| 20 | * @var StoreManagerInterface  | 
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| 21 | */  | 
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| 22 | private $storeManager;  | 
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| 23 | |||
| 24 | /**  | 
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| 25 | * @param CategoryResolverInterface $categoryResolver  | 
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| 26 | * @param StoreManagerInterface $storeManager  | 
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| 27 | */  | 
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| 28 | public function __construct(CategoryResolverInterface $categoryResolver, StoreManagerInterface $storeManager)  | 
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| 33 | |||
| 34 | /**  | 
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| 35 | * @param UrlPath $urlPath  | 
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| 36 | * @param int $storeId  | 
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| 37 | *  | 
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| 38 | * @return EntityData[]  | 
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| 39 | */  | 
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| 40 | public function check(UrlPath $urlPath, int $storeId) : array  | 
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| 46 | |||
| 47 | /**  | 
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| 48 | * @param UrlPath $urlPath  | 
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| 49 | * @param int $storeId  | 
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| 50 | *  | 
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| 51 | * @return int  | 
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| 52 | */  | 
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| 53 | View Code Duplication | private function resolveParentCategoryId(UrlPath $urlPath, int $storeId) : int  | 
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| 63 | }  | 
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| 64 | 
This check marks calls to methods that do not seem to exist on an object.
This is most likely the result of a method being renamed without all references to it being renamed likewise.