public void adicionar_U() {
	
		
		DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
		Key customerKey = KeyFactory.createKey("Usuario", Username);
        
		Date date = new Date();
        Entity Usuario = new Entity("Usuario", customerKey);
        Usuario.setProperty("Username", Username);
        Usuario.setProperty("password", password);
        Usuario.setProperty("date", date);
        
        
        Query q = new Query("Persona");
        q.addFilter("Username", FilterOperator.EQUAL, Username);
        PreparedQuery pq = datastore.prepare(q);
        Entity Persona = pq.asSingleEntity();
        
     
     // Entity employee = /*...*/;
     // Entity contactInfo = /*...*/;
     EmbeddedEntity embeddedContactInfo = new EmbeddedEntity();
     Key infoKey = Persona.getKey();
     embeddedContactInfo.setKey(infoKey);
     embeddedContactInfo.setPropertiesFrom(Persona);

     Usuario.setProperty("InfoPersona", embeddedContactInfo);
        
      //  System.out.println(Username+"<-->"+password);

        datastore.put(Usuario);
        
       // System.out.println(Usuario.getProperties());
        
	}