public RelationTypeDTO GetRelationTypeById(int id)
        {
            var relationType = businessManager.GetRelationType(id);

            RelationTypeDTO relationTypeDTO = new RelationTypeDTO()
            {
                id   = relationType.IdRelationType,
                name = relationType.Name
            };

            return(relationTypeDTO);
        }
        public RelationTypeDTO GetRelationTypeById(int id)
        {
            RelationTypeDTO relationType = new RelationTypeDTO(businessManager.GetRelationTypeById(id));

            return(relationType);
        }