How to add a `namespace` to a class if non is set?

[numediaweb]

Question

I have been playing with this nice library: good job by the way 👏

Trying to create my own custom rule that adds a namespace to a class if non is set.. But I couldn't figure it out sofar...

The file I have:

<?php

class MyClass extends SecureControllerAction {
...
}

The results I expect:

<?php

namespace App\Controller;

class MyClass extends SecureControllerAction {
...
}

My current rule

    /**
     * @return string[]
     */
    public function getNodeTypes(): array
    {
        return [
            Name::class,
            Class_::class,
            Namespace_::class,
        ];
    }

    /**
     * @param Class_ $node
     */
    public function refactor(Node $node): ?Node
    {
         // Here I'am stuck as the file itself doesn't have a namespace node!
    }

Any help would be appreciated 🙏