Unity 2022.2 and higher -- UnityEditor.Experimental.AssetImporters not found

[quietpixel]

When updating the project to Unity 2022.2 or higher, the AssetImporterEditor and ScriptedImporter classes are not found. This is because UnityEditor.Experimental.AssetImporters was promoted to non-experimental status.

To fix the compilation issues, go into GLTFImporter.cs and GLTFlmporterInspector.cs and change

using UnityEditor.Experimental.AssetImporters

to

using UnityEditor.AssetImporters