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    <ui:Template name="LabelsTab" src="LabelsTab.uxml" />
    <UnityEditor.U2D.Animation.SpriteLibraryEditor.EditorMainWindow name="EditorMainWindow" >
            <UnityEngine.UIElements.TwoPaneSplitView fixed-pane-index="0" orientation="Horizontal" class="sprite-library-editor-window__split-view">
                <ui:Instance template="CategoriesTab" name="CategoriesTab"/>
                <ui:Instance template="LabelsTab" name="LabelsTab" />
            </UnityEngine.UIElements.TwoPaneSplitView>
    </UnityEditor.U2D.Animation.SpriteLibraryEditor.EditorMainWindow>
</ui:UXML>