be.ac.vub.simpleocl.tests org.eclipse.jdt.core.javabuilder org.eclipse.pde.ManifestBuilder org.eclipse.pde.SchemaBuilder be.ac.vub.simpleocl.resource.simpleocl.builder org.eclipse.jdt.core.javanature org.eclipse.pde.PluginNature be.ac.vub.simpleocl.resource.simpleocl.nature