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