When unity customizes the editor, let the subclass inherit the inspector display effect of the parent class

In the official document CustomEditor function

namespace UnityEditor
{
    
    //
    //  Abstract :
    // Tells an Editor class which run-time type it's an editor for.
    public class CustomEditor : Attribute
    {
    
        //
        //  Abstract :
        // Defines which object type the custom editor class can edit.
        //
        //  Parameters :
        // inspectedType:
        // Type that this editor can edit.
        //
        // editorForChildClasses:
        // If true, child classes of inspectedType will also show this editor. Defaults
        // to false.
        public CustomEditor(Type inspectedType);
        //
        //  Abstract :
        // Defines which object type the custom editor class can edit.
        //
        //  Parameters :
        // inspectedType:
        // Type that this editor can edit.
        //
        // editorForChildClasses:
        // If true, child classes of inspectedType will also show this editor. Defaults
        // to false.
        public CustomEditor(Type inspectedType, bool editorForChildClasses);

        //
        //  Abstract :
        // If true, match this editor only if all non-fallback editors do not match. Defaults
        // to false.
        public bool isFallback {
     get; set; }
    }
}

CustomEditor There are two , When calling the second function, the second value is true That's all right.