UnityのEditor拡張で毎フレームRepaintする

よく忘れるのでメモ

public class TestEditor : Editor
{
    private void OnEnable() => EditorApplication.update += OnUpdate;
    private void OnDisable() => EditorApplication.update -= OnUpdate;
    
    private void OnUpdate()
    {
        Repaint();
    }

    public override void OnInspectorGUI()
    {
        base.OnInspectorGUI();
        
        //hoge
    }
}