rmp-common-library org.eclipse.jdt.core.javabuilder net.sf.eclipsecs.core.CheckstyleBuilder com.google.gdt.eclipse.core.webAppProjectValidator com.google.gwt.eclipse.core.gwtProjectValidator org.eclipse.m2e.core.maven2Builder org.eclipse.m2e.core.maven2Nature org.eclipse.jdt.core.javanature net.sf.eclipsecs.core.CheckstyleNature com.google.gwt.eclipse.core.gwtNature