* Returns a hash of the original parameter object.
     */
    HashCode getHash();

    @NonNullApi
    @ServiceScope(Scope.BuildTree.class)
    interface Factory {

        ToolingModelParameterCarrier createCarrier(Object parameter);

    }

class DefaultToolingModelParameterCarrierFactory(
    private val valueSnapshotter: ValueSnapshotter
) : ToolingModelParameterCarrier.Factory {

    override fun createCarrier(parameter: Any): ToolingModelParameterCarrier {
        return Carrier(parameter, valueSnapshotter)
    }

    private
    class Carrier(
        private val parameter: Any,

        BuildState buildState = extractSingleBuildState(targets);
        ToolingModelParameterCarrier carrier = parameter == null ? null : parameterCarrierFactory.createCarrier(parameter);
        return buildState.withToolingModels(controller -> getModels(controller, targets, modelName, carrier));
    }

            if (parameter == null) {
                model = scope.getModel(modelIdentifier.getName(), null);
            } else {
                model = scope.getModel(modelIdentifier.getName(), parameterCarrierFactory.createCarrier(parameter));
            }
        } catch (UnknownModelException e) {
            throw (InternalUnsupportedModelException) new InternalUnsupportedModelException().initCause(e);
        }

        }

        given:
        _ * workerThreadRegistry.workerThread >> true
        _ * modelController.locateBuilderForDefaultTarget("some.model", true) >> modelScope
        _ * parameterCarrierFactory.createCarrier(_) >> { Object param ->
            Mock(ToolingModelParameterCarrier)
        }
        _ * modelScope.getParameterType() >> parameterType