def __init__(self, content: list[bytes]) -> None:
        """
        content: collection of str, each str is a chunk in response
        """
        self.content = content
        self.index = 0  # This class iterates over self.content.
        self.closed = False
        self.cur_chunk = b""
        self.chunks_exhausted = False

        content: collection of str, each str is a chunk in response
        
test/test_response.py