This mirrors com.lightbend.lagom.internal.javadsl.registry.ServiceRegistry. The service locator implements the
javadsl version, but this is used to talk to it from Scala apps, and so they must be kept in sync.
This member is added by an implicit conversion from ServiceRegistry to
any2stringadd[ServiceRegistry] performed by method any2stringadd in scala.Predef.
This mirrors com.lightbend.lagom.internal.javadsl.registry.ServiceRegistry. The service locator implements the javadsl version, but this is used to talk to it from Scala apps, and so they must be kept in sync.