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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:
 async def fetch_api_description( url: typing.Union[str, ParseResult, SplitResult], insecure: bool = False):
 """Fetch the API description from the remote MAAS instance."""

    url_describe = urljoin(_ensure_url_string(url), "describe/")
    connector = aiohttp.TCPConnector(verify_ssl=(not insecure))
    session = aiohttp.ClientSession(connector=connector)
    async with session, session.get(url_describe) as response:
        if response.status != HTTPStatus.OK:
            raise RemoteError(
                "{0} -> {1.status} {1.reason}".format(
                    url, response))
        elif response.content_type != "application/json":
            raise RemoteError(
                "Expected application/json, got: %s"
                % response.content_type)
        else:
            return await response.json()