public async Task <IActionResult> GetCollection([FromHeader(Name = "Authorization")] string authorization, [FromRoute] string reference)
        {
            if (!_userValidationService.CheckAuthorizationToken(authorization))
            {
                return(Unauthorized());
            }
            var userRef = await _userValidationService.GetUserRef(authorization.Split(" ")[1]);

            ValidationOutput validationOutput;

            if (await _userValidationService.ValidateContentManager(authorization.Split(" ")[1]))
            {
                _logger.logInformation(userRef, LoggingEvents.GetItem, "Getting By Reference: {0}", reference);
                validationOutput = _collectionService.GetByReference(reference);
            }
            else if (await _userValidationService.Validate(authorization.Split(" ")[1]))
            {
                _logger.logInformation(userRef, LoggingEvents.GetItem, "Getting By Reference: {0}", reference);
                validationOutput = _collectionService.ClientGetByReference(reference);
            }
            else
            {
                return(Unauthorized());
            }

            if (validationOutput.HasErrors())
            {
                if (validationOutput is ValidationOutputBadRequest)
                {
                    _logger.logCritical(userRef, LoggingEvents.GetItemBadRequest, "Getting Collection Failed: {0}", ((ValidationOutputBadRequest)validationOutput).ToString());
                    return(BadRequest(validationOutput.FoundErrors));
                }

                if (validationOutput is ValidationOutputNotFound)
                {
                    _logger.logCritical(userRef, LoggingEvents.GetItemNotFound, "Getting Collection Failed: {0}", ((ValidationOutputNotFound)validationOutput).ToString());
                    return(NotFound(validationOutput.FoundErrors));
                }

                _logger.logCritical(userRef, LoggingEvents.GetItemInternalError, "Type of validation output not recognized. Please contact your software provider.");
                return(BadRequest("Type of validation output not recognized. Please contact your software provider."));
            }
            else
            {
                _logger.logInformation(userRef, LoggingEvents.GetItemOk, "Getting Collection: {0}", ((CollectionDto)validationOutput.DesiredReturn).ToString());
                return(Ok((CollectionDto)validationOutput.DesiredReturn));
            }
        }