code: @Path("/metrics")
      @GET
      @Produces({MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON})
      public Response getMetrics(@PathParam("accountSid") final String accountSid,
              @Context UriInfo info,
              @HeaderParam("Accept") String accept) {
          return getMetrics(accountSid, info, retrieveMediaType(accept));
      }
docs: Get statistics