<server>
  <application-settings location="*">
    <properties>
      <property name="leafletJSURL">https://unpkg.com/leaflet@1.5.1/dist/leaflet.js</property>
      <property name="leafletCSSURL">https://unpkg.com/leaflet@1.5.1/dist/leaflet.css</property>
    </properties>
  </application-settings>
</server>
