/// <summary>
        /// Validates this object
        /// </summary>
        /// <param name="path">The path to this object as a string</param>
        /// <param name="messages">the validation messages to date, these may be added to within this method</param>
        void IMedicationHistory.Validate(string path, List <ValidationMessage> messages)
        {
            var vb = new ValidationBuilder(path, messages);

            if (vb.ArgumentRequiredCheck("ItemStatus", ItemStatus))
            {
                if (ItemStatus != null)
                {
                    ItemStatus.ValidateMandatory(path + ".ItemStatus", messages);
                }
            }

            if (vb.ArgumentRequiredCheck("ChangesMade", ChangesMade))
            {
                if (ChangesMade != null)
                {
                    ChangesMade.ValidateMandatory(path + ".ChangesMade", messages);
                }
            }
        }