org.eclipse.papyrus.emf.facet.efacet org.eclipse.jdt.core.javabuilder org.eclipse.pde.ManifestBuilder org.eclipse.pde.SchemaBuilder org.eclipse.pde.PluginNature org.eclipse.jdt.core.javanature net.sf.eclipsecs.core.CheckstyleNature org.eclipse.pde.api.tools.apiAnalysisNature