/// <summary>
/// 设置指定会话的草稿。
/// </summary>
/// <param name="conv_id">会话ID</param>
/// <param name="iMConvType">会话类型</param>
/// <param name="handler"></param>
public static TIMResult IMConvSetDraft(string conv_id, TIMConvType iMConvType, Draft user_draft)
{
return((TIMResult)TIMClientAPIDef.TIMConvSetDraft(conv_id, iMConvType, JsonConvert.SerializeObject(user_draft)));
}