UnityEditor.SpriteEditorWindow.GetExistingOverlappingSprite C# (CSharp) Method

        private SpriteRect GetExistingOverlappingSprite(Rect rect)
        {
            for (int i = 0; i < this.m_RectsCache.Count; i++)
            {
                Rect a = this.m_RectsCache.RectAt(i).m_Rect;
                if (this.Overlap(a, rect))
                {
                    return this.m_RectsCache.RectAt(i);
                }
            }
            return null;
        }