How to use the hypixel.HypixelAPIError function in hypixel

def setCacheTime(seconds):
    """ This function sets how long the request cache should last, in seconds.

        Parameters
        -----------
        seconds : float
            How long you would like Hypixel-API requests to be cached for.
    """
    try:
        global cacheTime
        cacheTime = float(seconds)
        return "Cache time has been successfully set to {} seconds.".format(cacheTime)
    except ValueError as chainedException:
        raise HypixelAPIError("Invalid cache time \"{}\"".format(seconds)) from chainedException

requestEnd += '&{}={}'.format(name, value)

    cacheURL = HYPIXEL_API_URL + '{}?key={}{}'.format(typeOfRequest, "None", requestEnd) # TODO: Lowercase
    allURLS = [HYPIXEL_API_URL + '{}?key={}{}'.format(typeOfRequest, api_key, requestEnd)] # Create request URL.

    # If url exists in request cache, and time hasn't expired...
    if cacheURL in requestCache and requestCache[cacheURL]['cacheTime'] > time():
        response = requestCache[cacheURL]['data'] # TODO: Extend cache time
    else:
        requests = (grequests.get(u) for u in allURLS)
        responses = grequests.imap(requests)
        for r in responses:
            response = r.json()

        if response['success'] is False:
            raise HypixelAPIError(response)
        if typeOfRequest == 'player':
            if response['player'] is None:
                raise PlayerNotFoundException(uuid)
        if typeOfRequest != 'key': # Don't cache key requests.
            requestCache[cacheURL] = {}
            requestCache[cacheURL]['data'] = response
            requestCache[cacheURL]['cacheTime'] = time() + cacheTime # Cache request and clean current cache.
            cleanCache()
    try:
        return response[typeOfRequest]
    except KeyError:
        return response

def getSession(self):
        """ This function is used to get a player's session information. """
        UUID = self.UUID
        try:
            session = getJSON('session', uuid=UUID)
        except HypixelAPIError:
            session = None
        return session

Parameters
        -----------
        api_keys : list
            A list of the API keys that you would like to use.

            Example: ``['740b8cf8-8aba-f2ed-f7b10119d28']``.
    """
    for api_key in api_keys:
        if len(api_key) == HYPIXEL_API_KEY_LENGTH:
            response = getJSON('key', key=api_key)
            if response['success'] is True:
                verified_api_keys.append(api_key)
            else:
                raise HypixelAPIError("hypixel/setKeys: Error with key XXXXXXXX-XXXX-XXXX-XXXX{} | {}".format(api_key[23:], response))
        else:
            raise HypixelAPIError("hypixel/setKeys: The key '{}' is not 36 characters.".format(api_key))