Latest version of com.vaadin:vaadin-compatibility-server
https://javadoc.io/doc/com.vaadin/vaadin-compatibility-server
Current version 8.21.0
https://javadoc.io/doc/com.vaadin/vaadin-compatibility-server/8.21.0
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/com.vaadin/vaadin-compatibility-server/8.21.0/package-list