如何将Faust中的消费者设置为特定的偏移量

from faust import App, Topic

app = App('my-app', broker='kafka://localhost:9092')
topic = Topic('my-topic')

@app.agent(topic)
async def my_consumer(stream):
    async for event in stream:
        # 处理接收到的消息
        print(event)

@app.agent(topic)
async def my_consumer(stream):
    # 将消费者的偏移量设置为主题的起始位置
    stream.seek_to_beginning()
    
    async for event in stream:
        # 处理接收到的消息
        print(event)

@app.agent(topic)
async def my_consumer(stream):
    # 将消费者的偏移量设置为特定的位置
    stream.seek(10)
    
    async for event in stream:
        # 处理接收到的消息
        print(event)