How to remove undo from history (RevertAllInCurrentGroup?) - unity3d

Question

I'm trying to use RevertAllInCurrentGroup to undo the last operation but it doesn't seem to work. Actually what I really want to do is just remove the undo from the history; I don't care whether the undo is applied or not.
In some init code I have:
// 'component' is a MonoBehaviour-derived class. Here I create the default editor for the component
m_editor = Editor.CreateEditor(component);
And then in OnGUI in my EditorWindow:
m_editor.OnInspectorGUI();
// ..'hasChanged' is set to true if the user changed some property
if (hasChanged)
{
// ..do some stuff using the new values on the object, which includes sending a message to a server
Undo.RevertAllInCurrentGroup();
}
When I call RevertAllInCurrentGroup I get InvalidOperationException: Operation is not valid due to the current state of the object in some Stack object in GUILayoutUtility.EndLayoutGroup. I figured maybe I shouldn't be doing the revert in OnGUI, so I changed it to set a flag and do the revert in Update but that doesn't make any difference (except I obviously no longer get the exception).
Does anyone know how to use this function, or if there is some other way that I could undo the last operation that was applied by the Editor instance? I've tried using Undo.RegisterCompleteObjectUndo and Undo.ClearUndo but they don't seem to do anything either (the undo operation still appears in the undo stack).
For clarification, I'm dynamically creating GameObjects with components in the editor based on messages I receive from a server (which is a running Unity game, which could be inside or outside the editor - this is a live update system). Then I allow editing of those components, and send the changed components back to the server. I'm rendering my own inspector UI and I wanted to use the built-in Editor instances for components (e.g. so the built-in CameraEditor will be used if there is a Camera component).
The only problem is that using the built-in editors causes undo operations to be added to the stack, but I really don't care about these undo operations because the GameObject they apply to is just a temporary placeholder GameObject which is continually updated every coulpe of seconds, whenever I receive a new message from the server.

Answer 1

if what you want is the same as clicking on the Edit->Undo menu (or as you put, undo the last operation that was applied by the editor), use below code:
Undo.PerformUndo();