/// <summary>
/// 查看麦序头元素
/// </summary>
/// <param name="roomID">聊天室ID</param>
/// <param name="cb">回调函数</param>
/// <param name="json"></param>
public static void QueueHeaderAsync(long roomID, ChatRoomQueueHeaderDelegate cb, string json = null)
{
var ptr = NimUtility.DelegateConverter.ConvertToIntPtr(cb);
ChatRoomNativeMethods.nim_chatroom_queue_header_async(roomID, json, CallbackBridge.ChatroomQueueHeaderCallback, ptr);
}