https://docs.unity3d.com/6000.3/Documentation/ScriptReference/EditorGUI-indentLevel.html
Unity - Scripting API: EditorGUI.indentLevel
scripting apiunity
https://learn.microsoft.com/zh-cn/dotnet/api/system.diagnostics.trace.indentlevel?view=netframework-4.8.1&viewFallbackFrom=net-10.0
Trace.IndentLevel Property (System.Diagnostics) | Microsoft Learn
Gets or sets the indent level.
property systemtracediagnosticsmicrosoftlearn