[CodeQuality] Add FlipNegatedTernaryInstanceofRector to code quality level

rules/Instanceof_/Rector/Ternary/FlipNegatedTernaryInstanceofRector.php

@@ -22,8 +22,25 @@ public function getRuleDefinition(): RuleDefinition
     {
         return new RuleDefinition('Flip negated ternary of `instanceof` to direct use of object', [
             new CodeSample(
-                'echo ! $object instanceof Product ? null : $object->getPrice();',
-                'echo $object instanceof Product ? $object->getPrice() : null;'
+                <<<'CODE_SAMPLE'
+class SomeClass
+{
+    public function resolvePrice(object $object): ?int
+    {
+        return ! $object instanceof Product ? null : $object->getPrice();
+    }
+}
+CODE_SAMPLE
+                ,
+                <<<'CODE_SAMPLE'
+class SomeClass
+{
+    public function resolvePrice(object $object): ?int
+    {
+        return $object instanceof Product ? $object->getPrice() : null;
+    }
+}
+CODE_SAMPLE
             ),
         ]);
     }

src/Config/Level/CodeQualityLevel.php

@@ -76,6 +76,7 @@
 use Rector\EarlyReturn\Rector\If_\RemoveAlwaysElseRector;
 use Rector\EarlyReturn\Rector\Return_\PreparedValueToEarlyReturnRector;
 use Rector\EarlyReturn\Rector\StmtsAwareInterface\ReturnEarlyIfVariableRector;
+use Rector\Instanceof_\Rector\Ternary\FlipNegatedTernaryInstanceofRector;
 use Rector\Php52\Rector\Property\VarToPublicPropertyRector;
 use Rector\Php71\Rector\FuncCall\RemoveExtraParametersRector;
 use Rector\Renaming\Rector\FuncCall\RenameFunctionRector;
@@ -163,6 +164,7 @@ final class CodeQualityLevel
         PreparedValueToEarlyReturnRector::class,
         ReturnEarlyIfVariableRector::class,
         InlineIsAInstanceOfRector::class,
+        FlipNegatedTernaryInstanceofRector::class,
         InlineConstructorDefaultToPropertyRector::class,
         TernaryEmptyArrayArrayDimFetchToCoalesceRector::class,
         OptionalParametersAfterRequiredRector::class,