/// <summary>
/// 设置群成员专属头衔
/// </summary>
/// <param name="userId">用户id</param>
/// <param name="specialTitle">
/// <para>专属头衔</para>
/// <para>当值为 <see langword="null"/> 或 <see cref="string"/>.<see langword="Empty"/> 时为清空名片</para>
/// </param>
public async ValueTask <ApiStatus> SetGroupMemberSpecialTitle(long userId, string specialTitle)
{
return(await SoraApi.SetGroupMemberSpecialTitle(Id, userId, specialTitle));
}