Fixed compatibility with PHPStan 0.12

Author: ondrejmirtes

src/Reflection/PHPParser/NamespacedNameProperty.php

@@ -4,6 +4,7 @@
 
 use PhpParser\Node\Name;
 use PHPStan\Reflection\ClassReflection;
+use PHPStan\TrinaryLogic;
 use PHPStan\Type\ObjectType;
 use PHPStan\Type\Type;
 
@@ -53,4 +54,19 @@ public function isWritable(): bool
 		return true;
 	}
 
+	public function isDeprecated(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
+	public function getDeprecatedDescription(): ?string
+	{
+		return null;
+	}
+
+	public function isInternal(): TrinaryLogic
+	{
+		return TrinaryLogic::createNo();
+	}
+
 }