dwr org.eclipse.wst.jsdt.core.javascriptValidator org.eclipse.jdt.core.javabuilder org.eclipse.ui.externaltools.ExternalToolBuilder auto,full,incremental, LaunchConfigHandle <project>/.externalToolBuilders/Ant DWR.launch org.eclipse.jdt.core.javanature org.eclipse.wst.jsdt.core.jsNature