jruby3 org.eclipse.jdt.core.javabuilder org.eclipse.ui.externaltools.ExternalToolBuilder auto,full,incremental, LaunchConfigHandle <project>/.externalToolBuilders/Serialize Builtin Files.launch org.eclipse.ui.externaltools.ExternalToolBuilder full,incremental, LaunchConfigHandle <project>/.externalToolBuilders/Create Jar File.launch org.eclipse.jdt.core.javanature org.eclipse.team.cvs.core.cvsnature