Accessing resource from resource manager link

class OrdersRelationManager extends RelationManager
{
    protected static string $relationship = 'orders';

    public function form(Form $form): Form
    {
        return OrderResource::form($form);
    }

    public function table(Table $table): Table
    {
        return OrderResource::table($table);
    }

    public function isReadOnly(): bool
    {
        return false;
    }

    public function canCreate(): bool
    {
        return false;
    }