I think it would be favorable to create a section dedicated for each class in the API docs, then a sub-section for each method below in the hierarchy. Example below
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Dixie\LaravelModelFuture\Models\Future
Description of the purpose of this class
Illuminate\Database\Eloquent\Builder untilDate(Carbon\Carbon $date)
Query only futures scheduled between date('now') and the given date. This is an Eloquent scope.