BetaBetaThe name that represents this world clock. Must have a namespace and use only valid identifier characters. (e.g., 'mypack:my_clock').
OptionalregistrationOptions: WorldClockRegistrationOptionsAdditional options for registering a world clock, such as including time markers at registration time.
This function can throw errors.
WorldClockInvalidRegistryError
Provides the functionality for registering custom world clocks. World clocks can only be registered during the system startup event.