what does it mean to find a graph by using a slug attribute?

Figured it out after a few days. Essentially I needed to create a custom resolver.

schema.graphql

type Query {
  forumCategoryBySlug(slug: String! @eq): ForumCategory
}

app/GraphQL/Queries/ForumCategoryBySlug.php

<?php

namespace App\GraphQL\Queries;
use App\Models\ForumCategory;

class ForumCategoryBySlug
{
    /**
     * @param  null  $_
     * @param  array<string, mixed>  $args
     */
    public function __invoke($_, array $args)
    {
        $category = \App\Models\ForumCategory::findBySlug($args["slug"])->first();
        return $category;
    }
}