Bundle bundle = Activator.getBundle(contributor); if (bundle == null)
if (contributor == null)
	public boolean matchDNChain(String pattern) {		Bundle bundle = Activator.getBundle(contributor);		if (bundle == null)			return false;		return BundleSignerCondition.getCondition(bundle, new ConditionInfo(BundleSignerCondition.class.getName(), new String[] {pattern})).isSatisfied();	}