/// <summary>
        /// Validates service channel id list.
        /// </summary>
        /// <returns></returns>
        public override void Validate(ModelStateDictionary modelState)
        {
            if (Model == null)
            {
                return;
            }

            var i = 0;

            Model.ForEach(id =>
            {
                var channelId = new ServiceChannelIdValidator(id, channelService, userRole, $"[{ i++ }].{PropertyName}");
                channelId.Validate(modelState);
            });
        }
        /// <summary>
        /// Validates channel id.
        /// </summary>
        /// <returns></returns>
        public override void Validate(ModelStateDictionary modelState)
        {
            if (Model == null)
            {
                return;
            }

            channelValidator.Validate(modelState);
            if (!modelState.IsValid)
            {
                return;
            }
            var channel = channelValidator.ServiceChannel;

            // additional connection information (service hours & contact information) are only allowed for service location channel. PTV-2475
            if (channel != null && channel.ServiceChannelType != ServiceChannelTypeEnum.ServiceLocation.ToString() &&
                (Model.ServiceHours?.Count > 0 || Model.ContactDetails != null))
            {
                modelState.AddModelError(PropertyName, string.Format(CoreMessages.OpenApi.AdditionalInfoForConnection, channel.Id, channel.ServiceChannelType));
                return;
            }
        }
        /// <summary>
        /// Validates service channels
        /// </summary>
        /// <param name="modelState"></param>
        public override void Validate(ModelStateDictionary modelState)
        {
            if (Model == null)
            {
                return;
            }

            Guid?channelId = Model.Count > 0 ? Model.First().ChannelGuid : (Guid?)null;

            if (!channelId.HasValue)
            {
                return;
            }

            var channelValidator = new ServiceChannelIdValidator(channelId.Value, channelService, UserRoleEnum.Eeva, "ServiceChannelId"); // this is always asti connection so we won't check the channel for visibility by setting user role as Eeva!

            channelValidator.Validate(modelState);
            if (!modelState.IsValid)
            {
                return;
            }

            var channel = channelValidator.ServiceChannel;

            if (channel.ServiceChannelType != ServiceChannelTypeEnum.ServiceLocation.ToString() && Model.Any(c => c.ServiceHours?.Count > 0 || c.ContactDetails != null))
            {
                modelState.AddModelError(PropertyName, string.Format(CoreMessages.OpenApi.AdditionalInfoForConnection, channel.Id, channel.ServiceChannelType));
            }
            else
            {
                // Validate service ids
                var serviceIds = Model.Select(c => c.ServiceGuid).ToList();
                ServiceIdListValidator services = new ServiceIdListValidator(serviceIds, serviceService, "ServiceRelations", "ServiceId");
                services.Validate(modelState);
            }
        }