com.unity.services.samples.game-lobby/Assets/Scripts/UI/PlayerNameUI.cs

using TMPro;
using UnityEngine;

namespace LobbyRelaySample.UI
{
    public class PlayerNameUI : ObserverPanel<LobbyUser>
    {
        [SerializeField]
        TMP_Text m_TextField;

        public override void ObservedUpdated(LobbyUser observed)
        {
            m_TextField.SetText(observed.DisplayName);
        }
    }
}