<NME> NullNullableDefaultHintsClass.php
<BEF> <?php

namespace ZendTest\Code\TestAsset;

class NullNullableDefaultHintsClass extends EmptyClass
{
    public function arrayParameter(?array $foo = null)
    {
    }

    public function callableParameter(?callable $foo = null)
    {
    }

    public function intParameter(?int $foo = null)
    {
    }

    public function floatParameter(?float $foo = null)
    {
    }

    public function stringParameter(?string $foo = null)
    {
    }

    public function boolParameter(?bool $foo = null)
    {
    }

    public function selfParameter(?self $foo = null)
    {
    }

    public function nullableDefaultHintsClassParameter(?NullNullableDefaultHintsClass $foo = null)
    {
    }
}

<MSG> Testing against the `parentParameter` nullable hint on the parent parameter class

<DFF> @@ -32,6 +32,10 @@ class NullNullableDefaultHintsClass
     {
     }
 
+    public function parentParameter(?parent $foo = null)
+    {
+    }
+
     public function nullableDefaultHintsClassParameter(?NullNullableDefaultHintsClass $foo = null)
     {
     }

Testing against the `parentParameter` nullable hint on the parent parameter class