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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def connect(self, username, checksum, password=None, key=None):
 """Connect to websocket through asyncio http interface"""


        ws_url = (
            f"{BASE_WS_URL}?room={self.room.room_id}&cs={checksum}&nick={username}"
            f"&rn={random_id(6)}&t={int(time.time() * 1000)}&transport=websocket&EIO=3"
        )
        if password:
            ws_url += f"&password={password}"
        elif key:
            ws_url += f"&key={key}"

        ARBITRATOR.create_connection(
            self.proto, ws_url, self.headers["User-Agent"], self.cookies
        )
        self.__conn_barrier.wait()