UnityEditor.GameViewSizesMenuItemProvider.Add C# (CSharp) Method

        public int Add(object obj)
        {
            GameViewSize size = CastToGameViewSize(obj);
            if (size == null)
            {
                return -1;
            }
            this.m_GameViewSizeGroup.AddCustomSize(size);
            ScriptableSingleton<GameViewSizes>.instance.SaveToHDD();
            return (this.Count() - 1);
        }