Latest version of io.vertx:vertx-ext
https://javadoc.io/doc/io.vertx/vertx-ext
Current version 8
https://javadoc.io/doc/io.vertx/vertx-ext/8
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/io.vertx/vertx-ext/8/package-list