sudoku.messages org.eclipse.jdt.core.javabuilder org.eclipse.pde.ManifestBuilder org.eclipse.pde.SchemaBuilder org.eclipse.ui.externaltools.ExternalToolBuilder auto,full,incremental, LaunchConfigHandle <project>/.externalToolBuilders/sudoku.messages.generateMessages.launch org.eclipse.jdt.core.javanature org.eclipse.pde.PluginNature