Celtix org.eclipse.ui.externaltools.ExternalToolBuilder clean,full, LaunchConfigHandle <project>/.externalToolBuilders/Regen.launch org.eclipse.jdt.core.javabuilder com.atlassw.tools.eclipse.checkstyle.CheckstyleBuilder net.sourceforge.pmd.eclipse.pmdBuilder org.eclipse.jdt.core.javanature com.atlassw.tools.eclipse.checkstyle.CheckstyleNature net.sourceforge.pmd.eclipse.pmdNature