Change isFinal return type

src/Reflection/Php/PhpPropertyReflection.php

@@ -99,9 +99,9 @@ public function isReadOnlyByPhpDoc(): bool
 return $this->isReadOnlyByPhpDoc;
 }
 
-public function isFinal(): bool
+public function isFinal(): TrinaryLogic
 {
-return $this->isFinal;
+return TrinaryLogic::createFromBoolean($this->isFinal);
 }
 
 public function getReadableType(): Type

src/Rules/Properties/OverridingPropertyRule.php

@@ -145,7 +145,7 @@ public function processNode(Node $node, Scope $scope): array
 ))->identifier('property.parentPropertyFinal')
 ->nonIgnorable()
 ->build();
-} elseif ($prototype->isFinal()) {
+} elseif ($prototype->isFinal()->yes()) {
 $errors[] = RuleErrorBuilder::message(sprintf(
 'Property %s::$%s overrides @final property %s::$%s.',
 $classReflection->getDisplayName(),

src/Rules/Variables/UnsetRule.php

@@ -81,7 +81,7 @@ public function processNode(Node $node, Scope $scope): array
 } elseif ($this->phpVersion->supportsPropertyHooks()) {
 if (
 !$propertyReflection->isPrivate()
-&& !$propertyReflection->isFinal()
+&& !$propertyReflection->isFinal()->yes()
 && !$propertyReflection->getDeclaringClass()->isFinal()
 ) {
 $errors[] = RuleErrorBuilder::message(