VirtualFile jar1DS = serializeDeserialize(jar1, VirtualFile.class);
assertNotNull("jar1 deserialized", jar1DS);
VirtualFile jar1DSMF = jar1DS.getChild("META-INF/MANIFEST.MF");
assertNotNull("jar1-filesonly!/META-INF/MANIFEST.MF", jar1DSMF);
mfIS = jar1DSMF.openStream();
mf1 = new Manifest(mfIS);
mainAttrs1 = mf1.getMainAttributes();
title1 = mainAttrs1.getValue(Attributes.Name.SPECIFICATION_TITLE);
assertEquals("jar1-filesonly", title1);
jar1DSMF.close();