System.Net.SocketAddress.this C# (CSharp) Метод

        public byte this[int offset] {
            get {
                //
                // access
                //
                if (offset<0 || offset>=Size) {
                    throw new IndexOutOfRangeException();
                }
                return m_Buffer[offset];
            }
            set {
                if (offset<0 || offset>=Size) {
                    throw new IndexOutOfRangeException();
                }
                if (m_Buffer[offset] != value) {
                    m_changed = true;
                }
                m_Buffer[offset] = value;
            }
        }