${constantServiceImpl("ConstantBuildService", "constant")}
            def serviceProvider = gradle.sharedServices.registerIfAbsent("constant", ConstantBuildService) {}

            ${convertingValueSourceImpl("ConvertingValueSource", valueSourceInputType, "String", conversion)}
            def valueSource = providers.of(ConvertingValueSource) {
                parameters.input = $valueSourceInput
            }