** Use in 'AppModule' classes to override a service builder.
@Js
facet class Override {
** The service Id (or override Id) to be overridden.
**
** Use either this or 'serviceType', not both.
const Str? serviceId := null
** The type of the service to be overridden.
**
** Use either this or 'serviceId', not both.
const Type? serviceType := null
** Override the list of scopes the service may be created in.
const Str[]? scopes := null
** Override the list of service ID aliases.
const Str[]? aliases := null
** Override the list of service types aliases.
const Type[]? aliasTypes := null
** An optional reference to this override, so others may override this override.
** 3rd party libraries should always supply an 'overrideId'.
const Str? overrideId := null
** Marks the override as optional; no Err is thrown if the service is not found.
**
** This allows you to override services that may or may not be defined in the registry.
** (e.g. overriding services from optional 3rd party libraries.)
const Bool optional := false
}