test/Library/PackageCache/com.unity.package-manager-ui@2.0.13/Editor/Resources/Templates/PackageSearchToolbar.uxml

<?xml version="1.0" encoding="utf-8"?>
<engine:UXML 
        xmlns:engine="UnityEngine.Experimental.UIElements" 
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="UnityEngine.Experimental.UIElements UIElementsSchema/UnityEngine.Experimental.UIElements.xsd">
    <engine:VisualElement name="searchContainer">
        <engine:TextField name="searchTextField"/>
        <engine:Button name="searchCancelButton"/>
    </engine:VisualElement>
</engine:UXML>