public bool RemoveThread(string threadToRemove)
        {
            if (string.IsNullOrEmpty(threadToRemove))
            {
                return(false);
            }

            ClaimsIdentity claimsIdentity = this.User.Identity as ClaimsIdentity;
            string         userId         = claimsIdentity.FindFirst(ClaimTypes.Name)?.Value;
            User           onlineUser     = this._userService.GetById(userId);

            // Supprimer dans threads.speakers et dans user.threads

            bool   isRemovedThread = _userService.RemoveThread(threadToRemove, onlineUser.Id);
            Thread modifiedThread  = _threadService.RemoveSpeaker(threadToRemove, onlineUser.Id);

            if (modifiedThread.Speakers.Length == 0)
            {
                _threadService.Delete(modifiedThread);
            }

            return(true); // Doit être approfondie
        }