code: public void scanLibraries(
  		String rootPackage, boolean includeSubPackages,
  		Filter<String> packageFilter, Filter<String> classFilter, Listener<Class<?>> classScanner
  	) {
  		for (AbstractClassLoader cl : libs)
  			cl.scan(rootPackage, includeSubPackages, packageFilter, classFilter, classScanner);
  	}
docs: Scan libraries to find classes.