title: Send list of list of objects with retrofit2
body: <pre><code>DateFormat formatoFechaOrden = new SimpleDateFormat("dd MM yyyy HH:mm");
  
      String restaurantId=getIntent().getStringExtra("restaurantId");
  
      String dateValue =formatoFechaOrden.format(hora.getTime());
  
      List&lt;List&lt;Meal&gt;&gt; mealsClientes = obtenerListasAlimentos();
  
      Boolean reservationStatus= false;
  
      int clients = listaCliente.size();
  
      Boolean onPlace=getIntent().getBooleanExtra("onPlace",false);
  
      String remarques = tvRemarques.getText().toString();
  
      User user = new User(session.getUserDetails().get("id"),session.getUserDetails().get("email"),session.getUserDetails().get("name"));
  
      List&lt;List&lt;Integer&gt;&gt;howMany = new ArrayList&lt;&gt;();
  
      List&lt;Meal&gt; menus = (List&lt;Meal&gt;) getIntent().getSerializableExtra("menus");
  </code></pre>
  
  <p>I have the follows variables that i want to send, i have tryied with GSON sending all in an objects, but is not working , how can i send List>meals with retrofit2 ????</p>
  
  <pre><code>    Order order = new Order(restaurantId,dateValue,mealsClientes,user,reservationStatus,clients,howMany,b,menus,onPlace,remarques,priceLeftToPay);
  
  
  Call&lt;ResponseBody&gt; call = service.createOrder(order);
  
  
  
   @POST("createOrder?token=FYfZ%2Fo28Mva6MGYnFOdiSOPPdVwSbTuYd86P3wYlq%2Fb5CDqHJwUgQKX5aALSiBP4XQC3TswG8I37%2F4K62ZUnx11n3MIc7sckbDCs8kFbbDMbuql8p0chLLHV20FLu90DfyCSkSvP9D2NAHgNAF8jk76%2B717S2qo%2F7XCw7QQtxIc%3D")
      Call&lt;ResponseBody&gt;createOrder(@Body Order order);
  </code></pre>