UnityEditor.ObjectSelector.GetSelectedInstanceID C# (CSharp) Method

        private int GetSelectedInstanceID()
        {
            int[] numArray = !this.IsUsingTreeView() ? this.m_ListArea.GetSelection() : this.m_ObjectTreeWithSearch.GetSelection();
            if (numArray.Length >= 1)
            {
                return numArray[0];
            }
            return 0;
        }