public async Task <IActionResult> AssignCoach(string builderId, [FromBody] CoachAssignmentModel coachAssignmentModel)
        {
            try
            {
                await _buildersService.AssignCoachAsync(coachAssignmentModel.CoachId, builderId);
            }
            catch (Exception e)
            {
                return(BadRequest($"There was an error assigning the coach: {e.Message}"));
            }

            return(Ok());
        }