using System;

using System.Text.RegularExpressions;

public class Program

{

    public static void Main()

    {

        var original = @"Name: BS002_Receptionist

Descriptions:

- LanguageCode: en-US

  Title: BS002_Receptionist

  Description: This article include everything related to Receptionist for BS002

- LanguageCode: nl-NL

  Title: BS002_Receptionist

  Description: Dit artikel bevat alles met betrekking tot Receptionist voor BS002

Roles:

- Role: BSEss_Attendant

  Permissions:

  - AccessUserManual

  - BasicCalling

  - ManageContacts

  - ViewPresence

  - ViewProfilePicture

  - PickupCallAllowed

  Features:

  - Feature: SupportedGroupContacts

    Value: 8

- Role: BSAdv_Attendant

  Permissions:

  - AccessUserManual

  - BasicCalling

  - ManageContacts

  - OmniDirFilterContactType

  - ParkCampCalls

  - ViewPresence

  - ViewProfilePicture

  - PickupCallAllowed

  Features:

  - Feature: SupportedGroupContacts

    Value: 30

- Role: BSPrm_Attendant

  Permissions:

  - AccessUserManual

  - BasicCalling

  - ContactNotes

  - ManageContacts

  - ManageQueues

  - OmniDirFilterContactType

  - ParkCampCalls

  - SendCallbackMail

  - ViewPresence

  - ViewProfilePicture

  - WebPageWidget

  - PickupCallAllowed

  Features:

  - Feature: SupportedGroupContacts

    Value: 0

  FeatureSwitches:

  - _FilterOnContactCenter  

Features:

- Feature: ManageQueues

  Value: 5

FeatureSwitches:

- _FilterOnContactCenter

Type: ArticleDocument

Signature: edf237b4a21a4dc117320f61c616927281f4ab7d20cae9538b5f57d807ec9df2";

        // put this is in a static variable outside your function

        var regex = new Regex(@"\n(\s*)FeatureSwitches:(?:\n(\1-\s\w+\n)*|\s\[\]\n)");

        var modified = regex.Replace(original, "\n{REMOVED}");

        Console.WriteLine(modified);

    }

}