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

<?xml version="1.0" encoding="utf-8"?>
<UXML xmlns:ui="UnityEngine.UIElements" xmlns:aui="UnityEditor.U2D.Animation">
        <aui:WeightToolbar name="WeightToolbar">
            <ui:PopupWindow name="PopupWindow" text="Weights">
            <ui:Button name="AutoGenerateWeight" tooltip="Wizard to generate, normalize and clear weights">
                <ui:Image name="AutoGenerateWeightImage" />
                <ui:Label text ="Auto Weights"/>
            </ui:Button>
            <ui:Button name="WeightPainterSlider" tooltip="Allow editing of skin weight using a slider tool">
                <ui:Image name="WeightPainterSliderImage" />
                <ui:Label text ="Weight Slider"/>
            </ui:Button>
            <ui:Button name="WeightPainterBrush" tooltip="Allow editing of skin weight using a brush tool">
                <ui:Image name="WeightPainterBrushImage" />
                <ui:Label text ="Weight Brush"/>
            </ui:Button>
            <ui:Button name="BoneInfluenceWidget" tooltip="Edit bones influence on a Sprite">
                <ui:Image name="BoneInfluenceWidgetImage" />
                <ui:Label text ="Bone Influence"/>
            </ui:Button>
            </ui:PopupWindow>
        </aui:WeightToolbar>
</UXML>