code: public static boolean shouldFilter(final IVulnerabilityFilter filter,
                                    final List<PackageCoordinate> path,
                                    final String vid) {
      return ((VulnerabilityFilterImpl)filter).shouldFilter(path, vid);
    }
docs: Kind of filthy this being here. It is in lieu of making a separate utility class for now. It allows us to run
  the filter without exposing private functionality to the users.