update

Assets/Editor/ReflectTreeViewState.cs

@@ -0,0 +1,23 @@
+using UnityEditor;
+using UnityEngine;
+using UnityEditor.IMGUI.Controls;
+using System.Reflection;
+
+public class ReflectTreeViewState : EditorWindow
+{
+    [MenuItem("Tools/Reflect TreeViewState")]
+    public static void ShowWindow()
+    {
+        var type = typeof(TreeViewState);
+        var sb = new System.Text.StringBuilder();
+        foreach (var p in type.GetProperties(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance))
+        {
+            sb.AppendLine("Prop: " + p.Name + " - " + p.PropertyType.FullName);
+        }
+        foreach (var f in type.GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance))
+        {
+            sb.AppendLine("Field: " + f.Name + " - " + f.FieldType.FullName);
+        }
+        Debug.Log(sb.ToString());
+    }
+}