private static Optional<String> getBundleSymbolicName(Manifest mf) {
        return getMainAttributeValue(mf, "Bundle-SymbolicName");
    }
Static utilities for analyzing jar files.

@author Tony Vaagenes
@author ollivir
@author gjoranv
bundle-plugin/src/main/java/com/yahoo/container/plugin/bundle/AnalyzeBundle.java