MyOwnPolicy.cs

    public class MyOwnPolicy : IAssetPolicy
    {
        private readonly IAssetTagPlanCache _planCache;
        private readonly IAssetDependencyFinder _finder;

        public MyOwnPolicy(IAssetTagPlanCache planCache, IAssetDependencyFinder finder)
        {
            _planCache = planCache;
            _finder = finder;
        }

        public void Apply(IPackageLog log, IAssetPipeline pipeline, AssetGraph graph)
        {
            WarmUp(new[]{"pageX-styles","a-single-style.css","other-style-set-for-pageX"});
            WarmUp(new[]{"pageX-scripts","a-single-script.js","other-script-set-for-pageX"});
        }

        public void WarmUp(string[] names)
        {
            var dependencies = _finder.CompileDependenciesAndOrder(names).ToList();
            if (dependencies.Count == 0)
            {
                return;
            }
            var mimeType = MimeType.MimeTypeByFileName(dependencies[0]);
            _planCache.PlanFor(mimeType, dependencies);
        }

    }