AtelierElieScripter.Dialogue.DialogueMainBlocks.this C# (CSharp) Метод

        public DialogueTextBlocks this[int index]
        {
            get
            {
                return mainBlocks[index];
            }

            set
            {
                if (!mainBlocks.ContainsKey(index))
                    mainBlocks.Add(index, value);
            }
        }