public override void OnInspectorGUI()
    {
        if (myAssetMerger == null)
        {
            return;
        }

        bool is_editable = true;

        // We can only build or do anything if we can link to our libraries.
#if !( HAPI_ENABLE_RUNTIME )
        is_editable = false;
        HoudiniGUI.help(HoudiniConstants.HAPI_UNSUPPORTED_PLATFORM_MSG, MessageType.Info);
#else
        if (!is_editable)
        {
            HoudiniGUI.help("This mesh is not editable.", MessageType.Info);
        }
#endif // !( HAPI_ENABLE_RUNTIME )

        bool gui_enable = GUI.enabled;
        GUI.enabled = is_editable;

        myAssetMerger.prShowInputSelection =
            HoudiniGUI.foldout("Houdini Input Selection", myAssetMerger.prShowInputSelection, true);
        if (myAssetMerger.prShowInputSelection)
        {
            bool changed = false;

            Object     input_object = myAssetMerger.prInputObject as Object;
            GameObject temp_obj     = null;
            HoudiniGUI.objectField(
                "input_object", "Input Object", ref input_object,
                typeof(GameObject), null, ref temp_obj);
            myAssetMerger.prInputObject = input_object as GameObject;

            bool           input_layer_enable      = myAssetMerger.prUseLayerMask;
            HoudiniGUIParm input_layer_enable_parm = new HoudiniGUIParm("input_layer_enable", "");
            input_layer_enable_parm.joinNext  = true;
            input_layer_enable_parm.labelNone = true;
            changed = HoudiniGUI.toggle(ref input_layer_enable_parm, ref input_layer_enable);
            if (changed)
            {
                myAssetMerger.prUseLayerMask = input_layer_enable;
            }

            LayerMask      input_layer      = myAssetMerger.prLayerMask;
            HoudiniGUIParm input_layer_parm = new HoudiniGUIParm("input_layer", "Layer");
            input_layer_parm.disabled = !input_layer_enable;
            bool join_last            = true;
            bool no_label_toggle_last = true;
            changed = HoudiniGUI.layerField(ref input_layer_parm, ref input_layer, ref join_last, ref no_label_toggle_last);
            if (changed)
            {
                myAssetMerger.prLayerMask = input_layer;
            }

            bool           input_tag_enable      = myAssetMerger.prUseTag;
            HoudiniGUIParm input_tag_enable_parm = new HoudiniGUIParm("input_tag_enable", "");
            input_tag_enable_parm.joinNext  = true;
            input_tag_enable_parm.labelNone = true;
            changed = HoudiniGUI.toggle(ref input_layer_enable_parm, ref input_tag_enable);
            if (changed)
            {
                myAssetMerger.prUseTag = input_tag_enable;
            }

            string         input_tag      = myAssetMerger.prTag;
            HoudiniGUIParm input_tag_parm = new HoudiniGUIParm("input_tag", "Tag");
            input_tag_parm.disabled = !input_tag_enable;
            join_last            = true;
            no_label_toggle_last = true;
            changed = HoudiniGUI.tagField(ref input_tag_parm, ref input_tag, ref join_last, ref no_label_toggle_last);
            if (changed)
            {
                myAssetMerger.prTag = input_tag;
            }
        }

        myAssetMerger.prShowHoudiniControls =
            HoudiniGUI.foldout("Houdini Controls", myAssetMerger.prShowHoudiniControls, true);
        if (myAssetMerger.prShowHoudiniControls)
        {
            if (GUILayout.Button("Recook"))
            {
                myAssetMerger.buildClientSide();
            }
        }

        GUI.enabled = gui_enable;
    }