Meta Avatar AvatarEditorDeeplink class not found

I am making a VR app using the lastest meta avatar sdk (v31) and I want to integrate the avatar editor into the app as described at this link meta-avatars-editor-integration  

As mentioned, I should just add this line of code to implement the feature:

// Source:OpenAvatarEditor.cs
public class OpenAvatarEditor : MonoBehaviour
{
    void Update()
    {
        // Button Press
        if (OVRInput.GetDown(OVRInput.Button.Start, OVRInput.Controller.LTouch | OVRInput.Controller.LHand))
        {
            AvatarEditorDeeplink.LaunchAvatarEditor();
        }
    }
}

Unfortunately, the class AvatarEditorDeeplink does not exist. I searched in every Oculus folder but there isn't. Did anyone have the same problem?
Thanks for any support