ch.ethz.origo.aranea.messagedsl org.eclipse.jdt.core.javabuilder org.eclipse.pde.ManifestBuilder org.eclipse.pde.SchemaBuilder org.eclipse.xtext.ui.shared.xtextBuilder org.eclipse.xtend.shared.ui.xtendBuilder org.eclipse.jdt.core.javanature org.eclipse.pde.PluginNature org.eclipse.xtext.ui.shared.xtextNature org.eclipse.xtend.shared.ui.xtendXPandNature