AoMBrgEditor.PssgNode.this C# (CSharp) Метод

        public PssgAttribute this[string attributeName]
        {
            get
            {
                if (HasAttribute(attributeName))
                {
                    return attributes[attributeName];
                }
                throw new ArgumentOutOfRangeException("attributeName");
            }
            set
            {
                this[attributeName] = value;
            }
        }