ModelProject/Library/PackageCache/com.unity.2d.animation@5.1.1/Editor/Assets/LayoutOverlay/LayoutOverlay.uxml

<?xml version="1.0" encoding="utf-8"?>
<UXML xmlns:ui="UnityEngine.UIElements" xmlns:myui="UnityEditor.U2D.Layout">
  <myui:LayoutOverlay name="LayoutOverlay" picking-mode="Ignore">
    <ui:VisualElement name="HorizontalHolder" picking-mode="Ignore">
      <myui:ScrollableToolbar name="VerticalToolbar" picking-mode="Ignore" />
      <ui:VisualElement name="LeftOverlay" picking-mode="Ignore" />
      <ui:VisualElement name="RightOverlay" picking-mode="Ignore" />
    </ui:VisualElement>
    <myui:ScrollableToolbar name="HorizontalToolbar" isHorizontal="true" picking-mode="Ignore" />
    <myui:DropdownMenu name="DropdownOverlay" picking-mode="Ignore" />
  </myui:LayoutOverlay>
</UXML>