Latest version of io.vertx:vertx-ext
https://javadoc.io/doc/io.vertx/vertx-ext
Current version 15
https://javadoc.io/doc/io.vertx/vertx-ext/15
package-list path (used for javadoc generation -link option)
https://javadoc.io/doc/io.vertx/vertx-ext/15/package-list