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

<?xml version="1.0" encoding="utf-8"?>
<UXML xmlns:ui="UnityEngine.UIElements" xmlns:eui="UnityEditor.UIElements" xmlns:aui="UnityEditor.U2D.Animation">
  <ui:VisualElement name="Container" picking-modes="Ignore">
    <ui:Image name ="HeaderImage">
      <ui:Label name ="HeaderText" text ="Bone Influences"/>
    </ui:Image>

    <aui:SelectListView name="ListView" itemHeight="20" reorderable="true"/>

    <ui:VisualElement name="ButtonsContainer" picking-mode="Ignore">
      <ui:Button name="AddButton" tooltip="Add selected bone to influence Sprite">
      </ui:Button>
      <ui:Button name="RemoveButton" tooltip="Remove selected bone from influencing Sprite">
      </ui:Button>
    </ui:VisualElement>
  </ui:VisualElement>
</UXML>