forrestplugin org.eclipse.ui.externaltools.ExternalToolBuilder LaunchConfigHandle <project>/.externalToolBuilders/com.atlassw.tools.eclipse.checkstyle.CheckstyleBuilder.launch org.eclipse.jdt.core.javabuilder org.eclipse.pde.ManifestBuilder org.eclipse.pde.SchemaBuilder com.ibm.sse.model.structuredbuilder org.eclipse.pde.PluginNature org.eclipse.jdt.core.javanature com.atlassw.tools.eclipse.checkstyle.CheckstyleNature