Nexus/Library/PackageCache/com.unity.2d.tilemap@1dcd64ff98c0/Editor/UI/TilePaletteClipboardPanelPopup.cs

using UnityEngine.UIElements;

namespace UnityEditor.Tilemaps
{
    internal class TilePaletteClipboardPanelPopup : BoolFieldOverlayPopupWindow
    {
        private BaseField<bool> trigger;

        public void CreateGUI()
        {
            var clipboardElement = new TilePaletteElement();
            rootVisualElement.Add(clipboardElement);
        }
    }
}