mocca at.gv.egiz 1.3.25 4.0.0 BKUViewer BKU Viewer Validator for plain text and XHTML to-be signed content at.gv.egiz bkucommon ${project.parent.version} xerces xercesImpl org.w3c css-validator 2.1-mocca org.w3c jigsaw tagsoup tagsoup org.slf4j slf4j-api