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