public ActionResult <MentorRequest> AcceptMentor([FromBody] MentorRequestParams requestParams) { if (!MentorRequestValidator.IsExistsRequest(requestParams)) { return(BadRequest(ErrorHandler.GenerateError(ErrorHandler.MentorRequestDoesNotExists))); } _projectRepo.AddMentorOnProject(requestParams); return(_mentorRequestRepo.ChangeState(requestParams, RequestState.Accepted)); }