using System;

using System.Collections.Generic;

public class Program

{

    private static HashSet<string> uhfServiceStatics;

​

    public static HashSet<string> UhfServiceBundleJs()

    {

        if (uhfServiceStatics == null)

        {

            uhfServiceStatics = new HashSet<string>(new[]

            {

                "One",

                "Two"

            });

        }

        return uhfServiceStatics;

    }

    private static HashSet<string> uhfComponentStatics;

​

    public static HashSet<string> UhfComponentBundleJs()

    {

        if (uhfComponentStatics == null)

        {

            var uhfComponentStaticsTemp = UhfServiceBundleJs();

​

            uhfComponentStaticsTemp.UnionWith(new[]

            {

                "Three"

            });

​

            uhfComponentStatics = uhfComponentStaticsTemp;

        }

​

        return uhfComponentStatics;

    }

    public static void Main()

    {

        UhfComponentBundleJs();

        var serviceBundle = UhfServiceBundleJs();

        foreach(var item in serviceBundle)

        {

            Console.WriteLine(item);

        }

​

    }

}