AppendTodoList

import asyncio
from ferogram import Client, raw

app = Client("my_session", api_id=12345, api_hash="0123456789abcdef0123456789abcdef")

async def main():
    await app.start()
    result = await app.raw.messages.AppendTodoList(
        peer='username',
        msg_id=42,
        list=[raw.types.TodoItem(id=0, title=raw.types.TextWithEntities(text='', entities=[]))]
    )
    print(result)

asyncio.run(main())