clustengine-master org.eclipse.wst.jsdt.core.javascriptValidator org.eclipse.jdt.core.javabuilder org.eclipse.wst.common.project.facet.core.builder org.eclipse.wst.validation.validationbuilder net.sourceforge.metrics.builder org.eclipse.jem.workbench.JavaEMFNature org.eclipse.wst.common.modulecore.ModuleCoreNature org.eclipse.wst.common.project.facet.core.nature org.eclipse.jdt.core.javanature org.eclipse.wst.jsdt.core.jsNature net.sourceforge.metrics.nature