Routing 
- Storefront routes must always have the prefix 
frontendin the name. - A route that should only be used by logged-in customers (including guest accounts) must have the 
@LoginRequiredflag. - Every route must have the 
Shopware\Core\Framework\Routing\Annotation\Sinceannotation. - Each core route must have a schema defined under 
src/Core/Framework/Api/ApiDefinition/Generator/Schema.