text: from ..attachments import FileAttachment, ItemAttachment
  from ..items import BaseItem
  from ..properties import ParentItemId
  from ..util import MNS, create_element, set_xml_value
  from .common import EWSAccountService, to_item_id
  
  
  class CreateAttachment(EWSAccountService):
      """MSDN:
      https://docs.microsoft.com/en-us/exchange/client-developer/web-service-reference/createattachment-operation
      """
  
      SERVICE_NAME = "CreateAttachment"
      element_container_name = f"{{{MNS}}}Attachments"
      cls_map = {cls.response_tag(): cls for cls in (FileAttachment, ItemAttachment)}
  
      def call(self, parent_item, items):
          return self._elems_to_objs(self._chunked_get_elements(self.get_payload, items=items, parent_item=parent_item))
  
      def _elem_to_obj(self, elem):
          return self.cls_map[elem.tag].from_xml(elem=elem, account=self.account)
  
      def get_payload(self, items, parent_item):
          payload = create_element(f"m:{self.SERVICE_NAME}")
          version = self.account.version
          if isinstance(parent_item, BaseItem):
              # to_item_id() would convert this to a normal ItemId, but the service wants a ParentItemId
              parent_item = ParentItemId(parent_item.id, parent_item.changekey)
          set_xml_value(payload, to_item_id(parent_item, ParentItemId), version=self.account.version)
          attachments = create_element("m:Attachments")
          for item in items:
              set_xml_value(attachments, item, version=version)
          payload.append(attachments)
          return payload
  