How to use the aiobotocore.session.AioSession function in aiobotocore

async def test_connector_timeout(event_loop):
    session = AioSession(loop=event_loop)
    config = AioConfig(max_pool_connections=1, connect_timeout=1,
                       retries={'max_attempts': 0})
    async with AIOServer() as server, \
            session.create_client('s3', config=config,
                                  endpoint_url=server.endpoint_url,
                                  aws_secret_access_key='xxx',
                                  aws_access_key_id='xxx') as s3_client:

        async def get_and_wait():
            await s3_client.get_object(Bucket='foo', Key='bar')
            await asyncio.sleep(100)

        task1 = asyncio.Task(get_and_wait(), loop=event_loop)
        task2 = asyncio.Task(get_and_wait(), loop=event_loop)

        try:

def get_session(*, env_vars=None, loop=None):
    """
    Return a new session object.
    """
    loop = loop or asyncio.get_event_loop()
    return AioSession(env_vars, loop=loop)