Make product API versions independently installable

backend/product/app/urls/domain_provider.go

@@ -10,6 +10,7 @@ type DomainProvider interface {
 	GetAPILink(linkElem ...string) (string, error)
 }
 
+// CreateDomainProvider accepts a resolved host, protocol and installation mount.
 func CreateDomainProvider(logger mlogger.Logger, domain, protocol, apiEndpoint string) (DomainProvider, error) {
 	return dimp.CreateDomainProviderImp(logger, domain, protocol, apiEndpoint)
 }