Unreal engine open editor widget in asset editor with a button

MyBlueprintLibrary.cpp

#include "Editor/EditorEngine.h"
#include "Subsystems/AssetEditorSubsystem.h"

void UMyBlueprintLibrary::OpenWidgetInAssetEditor(UWidget * SelfWidget) {
  if(IsValid(SelfWidget))
  {
      UObject * GeneratedBy = SelfWidget->WidgetGeneratedBy.Get();
      if(IsValid(GeneratedBy))
      {
          UAssetEditorSubsystem* AssetEditorSubsystem = GEditor->GetEditorSubsystem<UAssetEditorSubsystem>();
          AssetEditorSubsystem->OpenEditorForAsset(GeneratedBy);
      }
  }
}