Apakah kelas BitArray dalam C#?

using System;
using System.Collections;

namespace Demo {
   class Program {
      static void Main(string[] args) {

         BitArray ba1 = new BitArray(5);
         BitArray ba2 = new BitArray(5);

         byte[] a = { 90 };
         byte[] b = { 30 };

         ba1 = new BitArray(a);
         ba2 = new BitArray(b);

         Console.WriteLine("Bit array ba1: 60");

         for (int i = 0; i < ba1.Count; i++) {
            Console.Write("{0, -4} ", ba1[i]);
         }
         Console.WriteLine();

         Console.WriteLine("IsReadOnly = " + ba1.IsReadOnly);
         Console.WriteLine("IsReadOnly = " + ba2.IsReadOnly);

         Console.ReadKey();
      }
   }
}