/// <summary>
/// Creates an instance of a service with arguments
/// </summary>
/// <param name="constructorArgumentValues">
/// The constructor argument values.
/// </param>
/// <param name="cacheSuffix">
/// Optional additional caching suffix
/// </param>
/// <typeparam name="TService">
/// The type of the service to resolve
/// </typeparam>
/// <returns>
/// The <see cref="TService"/>.
/// </returns>
/// <exception cref="Exception">
/// Throws an exception if service cannot be resolved
/// </exception>
public TService Instance <TService>(object[] constructorArgumentValues, string cacheSuffix = "")
where TService : class, IRequestCachedService
{
//// We may need to manage separate instances of these services if the constructor arguments are different
//// so that we can assert the values returned are what we expect.
var suffix = string.Join(".", constructorArgumentValues.Select(x => x.ToString()));
var cacheKey = $"{ServiceCacheKey(typeof(TService))}{suffix}{cacheSuffix}".GetHashCode().ToString();
return((TService)this._cache.RequestCache.GetCacheItem(
cacheKey,
() =>
ActivatorHelper.Instance <TService>(constructorArgumentValues)));
}