maxkey-core maxkey-core org.eclipse.jdt.core.javabuilder org.eclipse.buildship.core.gradleprojectbuilder org.eclipse.wst.common.project.facet.core.builder org.eclipse.wst.validation.validationbuilder net.sf.eclipsecs.core.CheckstyleBuilder org.eclipse.jdt.core.javanature org.eclipse.buildship.core.gradleprojectnature org.eclipse.wst.common.project.facet.core.nature org.eclipse.wst.common.modulecore.ModuleCoreNature net.sf.eclipsecs.core.CheckstyleNature