/// <summary>
/// 移除用户
/// </summary>
public void RemoveUser(User user)
{ }
/// <summary>
/// 添加用户
/// </summary>
public void AddUser(User user)
{ }
/// <summary>
/// 移除用户
/// </summary>
public void RemoveUser(User user)
{ }
/// <summary>
/// 添加用户
/// </summary>
public void AddUser(User user)
{ }