sourceafIoc::RegistryOptions.fan

** (Service) - Holds the options passed into [RegistryBuilder.build()]`RegistryBuilder.build`.
** Useful for passing external immutable data into services.   
const mixin RegistryOptions {
    
    ** The options passed as into [RegistryBuilder.build()]`RegistryBuilder.build`.
    abstract [Str:Obj?] options()

    ** Return the value for the specified key. 
    @Operator
    abstract Obj? get(Str key)

    ** Returns 'true' if the specified key is mapped. 
    abstract Bool containsKey(Str key)
}

internal const class RegistryOptionsImpl : RegistryOptions {
    
    override const [Str:Obj?] options

    new make([Str:Obj?] options) {
        this.options = options.toImmutable
    }
    
    @Operator
    override Obj? get(Str key) {
        options[key]
    }

    override Bool containsKey(Str key) {
        options.containsKey(key)
    }
}