void addComputationListener(ComputationListener listener);

    void removeComputationListener(ComputationListener listener);

    <T, P extends ValueSourceParameters> Provider<T> instantiateValueSourceProvider(
        Class<? extends ValueSource<T, P>> valueSourceType,
        @Nullable Class<P> parametersType,
        @Nullable P parameters
    );

    /**

                : null;

            // TODO - consider deferring configuration
            configureParameters(parameters, configureAction);

            return instantiateValueSourceProvider(valueSourceType, parametersType, parameters);
        } catch (GradleException e) {
            throw e;
        } catch (Exception e) {

            val parametersType = if (hasParameters) readClass() else null
            val parameters = if (hasParameters) read()!! else null

            val provider =
                valueSourceProviderFactory.instantiateValueSourceProvider<Any, ValueSourceParameters>(
                    valueSourceType.uncheckedCast(),
                    parametersType?.uncheckedCast(),
                    parameters?.uncheckedCast()
                )