RemoveRefactorDuplicatedNodeInstanceCheckRector

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Remove refactor() method of Rector rule double check of $classMethod instance, if already defined in @param type

 final class SomeRector extends AbstractRector
 {
     public function getNodeTypes(): array
     {
         return [ClassMethod::class];
     }

     /**
      * @param ClassMethod $node
      */
     public function refactor(Node $node)
     {
-        if (! $node instanceof ClassMethod) {
-            return null;
-        }
     }
 }

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\DeadCode\Rector\Class_\RemoveRefactorDuplicatedNodeInstanceCheckRector;

return RectorConfig::configure()
    ->withRules([
        RemoveRefactorDuplicatedNodeInstanceCheckRector::class,
    ]);