Current outstanding issues include:

convert methods with names such as hasShowWarnings() to isShowWarnings()

Using the Jenkins Version Number library: https://github.com/jenkinsci/lib-version-number/blob/master/src/main/java/hudson/util/VersionNumber.java

Fixing bundledPluginsTest - currently throws a null pointer exception

Fix security issue  - checkstyle plugin needs to be updated to version 8.18 or later.