code: def validate_created_item(response)
        msg = response.response_messages[0]
  
        if(msg.status == 'Success')
          msg.items.empty? ? true : parse_created_item(msg.items.first)
        else
          raise EwsCreateItemError, "#{msg.code}: #{msg.message_text}"
        end
      end
docs: validate the CreateItem response.
   @return [Boolean, Item] returns true if items is empty and status is
     "Success" if items is not empty it will return the first Item since
     we are only dealing with single items here.
   @raise EwsCreateItemError on failure