code: @Nonnull
      public static Map<String, Integer> parseForcedGroups(@Nonnull final HttpServletRequest request) {
          final String forceGroupsList = getForceGroupsStringFromRequest(request);
          return parseForceGroupsList(forceGroupsList);
      }
docs: Consumer is required to do any privilege checks before getting here
  
  @param request a {@link HttpServletRequest} which may contain forced groups parameters from URL, Header or Cookie.
  @return a map of test names to bucket values specified by the request.  Returns an empty {@link Map} if nothing was specified