System.Threading.Overlapped.Pack C# (CSharp) Method

        public unsafe System.Threading.NativeOverlapped* Pack(System.Threading.IOCompletionCallback iocb)
        {
            throw null;
        }

 internal unsafe HttpResponseStreamAsyncResult(object asyncObject, object userState, AsyncCallback callback, byte[] buffer, int offset, int size, bool chunked, bool sentHeaders) : base(asyncObject, userState, callback)
 {
     this.m_SentHeaders = sentHeaders;
     Overlapped overlapped = new Overlapped {
         AsyncResult = this
     };
     if (size == 0)
     {
         this.m_DataChunks = null;
         this.m_pOverlapped = overlapped.Pack(s_IOCallback, null);
     }
     else
     {
         this.m_DataChunks = new UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK[chunked ? 3 : 1];
         object[] userData = new object[1 + this.m_DataChunks.Length];
         userData[this.m_DataChunks.Length] = this.m_DataChunks;
         int num = 0;
         byte[] arr = null;
         if (chunked)
         {
             arr = ConnectStream.GetChunkHeader(size, out num);
             this.m_DataChunks[0] = new UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK();
             this.m_DataChunks[0].DataChunkType = UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK_TYPE.HttpDataChunkFromMemory;
             this.m_DataChunks[0].BufferLength = (uint) (arr.Length - num);
             userData[0] = arr;
             this.m_DataChunks[1] = new UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK();
             this.m_DataChunks[1].DataChunkType = UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK_TYPE.HttpDataChunkFromMemory;
             this.m_DataChunks[1].BufferLength = (uint) size;
             userData[1] = buffer;
             this.m_DataChunks[2] = new UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK();
             this.m_DataChunks[2].DataChunkType = UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK_TYPE.HttpDataChunkFromMemory;
             this.m_DataChunks[2].BufferLength = (uint) NclConstants.CRLF.Length;
             userData[2] = NclConstants.CRLF;
         }
         else
         {
             this.m_DataChunks[0] = new UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK();
             this.m_DataChunks[0].DataChunkType = UnsafeNclNativeMethods.HttpApi.HTTP_DATA_CHUNK_TYPE.HttpDataChunkFromMemory;
             this.m_DataChunks[0].BufferLength = (uint) size;
             userData[0] = buffer;
         }
         this.m_pOverlapped = overlapped.Pack(s_IOCallback, userData);
         if (chunked)
         {
             this.m_DataChunks[0].pBuffer = (byte*) Marshal.UnsafeAddrOfPinnedArrayElement(arr, num);
             this.m_DataChunks[1].pBuffer = (byte*) Marshal.UnsafeAddrOfPinnedArrayElement(buffer, offset);
             this.m_DataChunks[2].pBuffer = (byte*) Marshal.UnsafeAddrOfPinnedArrayElement(NclConstants.CRLF, 0);
         }
         else
         {
             this.m_DataChunks[0].pBuffer = (byte*) Marshal.UnsafeAddrOfPinnedArrayElement(buffer, offset);
         }
     }
 }