Alsing.SourceCode.UndoBlockCollection.this C# (CSharp) Метод

        public UndoBlock this[int index]
        {
            get
            {
                ValidateIndex(index); // throws
                return m_array[index];
            }
            set
            {
                ValidateIndex(index); // throws

                ++m_version;
                m_array[index] = value;
            }
        }