code: @GET
    @Path("/db/{authenticatorName}/cachedSerializedUserMap")
    @Produces(SmileMediaTypes.APPLICATION_JACKSON_SMILE)
    @Consumes(MediaType.APPLICATION_JSON)
    @ResourceFilters(BasicSecurityResourceFilter.class)
    public Response getCachedSerializedUserMap(
        @Context HttpServletRequest req,
        @PathParam("authenticatorName") final String authenticatorName
    )
    {
      return handler.getCachedSerializedUserMap(authenticatorName);
    }
docs: @param req HTTP request
  
  @return serialized user map