store-appengine-webapp org.eclipse.jdt.core.javabuilder org.eclipse.ui.externaltools.ExternalToolBuilder full,incremental, LaunchConfigHandle <project>/.externalToolBuilders/com.google.appengine.eclipse.core.enhancerbuilder.launch com.google.appengine.eclipse.core.projectValidator com.google.gdt.eclipse.core.webAppProjectValidator org.eclipse.jdt.core.javanature com.google.appengine.eclipse.core.gaeNature com.google.gdt.eclipse.core.webAppNature