@Path("/{s}/{t}")
   public static class TestResourceWithGraph
   {
      @Valid B b;

      public TestResourceWithGraph(@PathParam("s") String s, @PathParam("t") String t)
      {
         b = new B(s, t);
      }

      @POST
      public void post()
      {
      }
   }

   public static class B
   {
      @Size(min=4) String s;
      @Size(min=5) String t;

      public B(String s, String t)
      {
         this.s = s;
         this.t = t;
      }
      public void setT(String t)
      {
         this.t = t;
      }
      public String getT()
      {
         return t;
      }
   }