org.eclipse.papyrus.emf.facet.custom.sdk.core 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 net.sourceforge.pmd.eclipse.plugin.pmdNature