private void AddShortTextFieldToPages(string fieldName)
        {
            var pageNodeType = typeof(PageNode);

            if (pageNodeType == null)
            {
                throw new Exception(string.Format("{0} type can't be resolved.", pageNodeType.FullName));
            }
            
            string fieldClrType = typeof(string).FullName;
            UserFriendlyDataType userFriendlyDataType = UserFriendlyDataType.ShortText;
            WcfField wcfField = new WcfField()
            {
                Name = fieldName,
                ContentType = pageNodeType.FullName,
                FieldTypeKey = userFriendlyDataType.ToString(),
                IsCustom = true,
                //Database mapping
                DatabaseMapping = new WcfDatabaseMapping()
                {
                    ClrType = fieldClrType,
                    ColumnName = fieldName.ToLower(),
                    Nullable = true,
                    DbType = "VARCHAR"
                },

                //Field definition
                Definition = new WcfFieldDefinition()
                {
                    Title = fieldName,
                    FieldName = fieldName,
                    FieldType = typeof(TextField).FullName
                }
            };

            CustomFieldsContext.Validate(wcfField, pageNodeType);
            CustomFieldsContext typeContext = new CustomFieldsContext(pageNodeType);
            var dictionary = new Dictionary<string, WcfField>();
            dictionary.Add(wcfField.Name, wcfField);
            typeContext.AddOrUpdateCustomFields(dictionary, pageNodeType.FullName);
            typeContext.SaveChanges();
        }