from typing import List # helper class for passing around an lxmf image field class LxmfImageField: def __init__(self, image_type: str, image_bytes: bytes): self.image_type = image_type self.image_bytes = image_bytes # helper class for passing around an lxmf file attachment class LxmfFileAttachment: def __init__(self, file_name: str, file_bytes: bytes): self.file_name = file_name self.file_bytes = file_bytes # helper class for passing around an lxmf file attachments field class LxmfFileAttachmentsField: def __init__(self, file_attachments: List[LxmfFileAttachment]): self.file_attachments = file_attachments