org.refal.plus.rfpdt org.antlr.eclipse.core.antlrbuilder org.eclipse.jdt.core.javabuilder org.eclipse.pde.ManifestBuilder org.eclipse.pde.SchemaBuilder org.antlr.eclipse.core.warningcleanerbuilder org.antlr.eclipse.core.smapbuilder org.antlr.eclipse.core.antlrnature org.eclipse.pde.PluginNature org.eclipse.jdt.core.javanature