jgridstart03 org.eclipse.jdt.core.javabuilder org.eclipse.ui.externaltools.ExternalToolBuilder clean,incremental, LaunchConfigHandle <project>/.externalToolBuilders/Ant Builder.launch org.eclipse.jem.workbench.JavaEMFNature org.eclipse.jdt.core.javanature org.eclipse.jem.beaninfo.BeanInfoNature