Expected behavior "Meta Data When Constructing Resources"

[talelmishali]

Hello,

Following the documentation Adding Meta Data When Constructing Resources my understanding is that using the additional() method will add additional data to the top-level resource response.

The resource structure:

- OrganizationResource
  - OrganizationBillingCollection
    - OrganizationBillingResource

When having the following code I have no additional data added to the response:

OrganizationResource.php

        return [
            ......
            'billing' => (new OrganizationBillingCollection($this->paymentMethods()))->additional([
                'meta' => [
                    'default_last4' => $this->pm_last_four,
                ],
            ]),
        ];

Instead, I have to access the additional data from inside the resource collection and add it.

OrganizationBillingCollection.php

        return [
            'data' => $this->collection,
            ...$this->additional,
        ];

Is that the expected behavior?