Conditional-Package PACKAGE-SPEC (',' PACKAGE-SPEC) *

/**
 * Answer extra packages. In this case we implement conditional package. Any
 */
@Override
protected Jar getExtra() throws Exception {
	Parameters conditionals = getParameters(CONDITIONAL_PACKAGE);
	conditionals.putAll(getParameters(CONDITIONALPACKAGE));
	if (conditionals.isEmpty())
		return null;
	trace("do Conditional Package %s", conditionals);
	Instructions instructions = new Instructions(conditionals);

	Collection<PackageRef> referred = instructions.select(getReferred().keySet(), false);
	referred.removeAll(getContained().keySet());

	Jar jar = new Jar("conditional-import");
	addClose(jar);
	for (PackageRef pref : referred) {
		for (Jar cpe : getClasspath()) {
			Map<String,Resource> map = cpe.getDirectories().get(pref.getPath());
			if (map != null) {
				copy(jar, cpe, pref.getPath(), false);
				// Now use copy so that bnd.info is processed, next line
				// should be
				// removed in the future TODO
				// jar.addDirectory(map, false);
				break;
			}
		}
	}
	if (jar.getDirectories().size() == 0) {
		trace("extra dirs %s", jar.getDirectories());
		return null;
	}
	return jar;
}