How to use the lastversion.utils.ApiCredentialsError function in lastversion

# got 403, likely due to used quota
                    if wait_for < 300:
                        if wait_for < 0:
                            log.warning(
                                'Exceeded API quota. Repeating request because quota is about to '
                                'be reinstated'
                            )
                        else:
                            log.warning(
                                'Waiting {} seconds for API quota reinstatement'.format(wait_for)
                            )
                            time.sleep(wait_for)
                        self.rate_limited_count = self.rate_limited_count + 1
                        return self.get(url)
                    else:
                        raise ApiCredentialsError(
                            'Exceeded API rate limit after waiting: {}'.format(
                                r.json()['message'])
                        )
            return self.get(url)

        if r.status_code == 403 and url != self.get_rate_limit_url():
            self.rate_limited_count = 0
        return r

def get(self, url, **kwargs):
        r = super(GitHubRepoSession, self).get(url, **kwargs)
        if r.status_code == 401:
            if self.api_token:
                raise ApiCredentialsError('API request was denied despite using an API token. '
                                          'Missing scopes?')
            raise ApiCredentialsError('Denied API access. Please set GITHUB_API_TOKEN env var '
                                      'as per https://github.com/dvershinin/lastversion#tips')
        if r.status_code == 403:
            if 'X-RateLimit-Reset' in r.headers and 'X-RateLimit-Remaining' in r.headers:
                if self.rate_limited_count > 2:
                    raise ApiCredentialsError(
                        'API requests were denied after retrying {} times'.format(
                            self.rate_limited_count)
                    )
                remaining = int(r.headers['X-RateLimit-Remaining'])
                wait_for = int(r.headers['X-RateLimit-Reset']) - time.time()
                if not remaining:
                    # got 403, likely due to used quota
                    if wait_for < 300:
                        if wait_for < 0:
                            log.warning(
                                'Exceeded API quota. Repeating request because quota is about to '

def get(self, url, **kwargs):
        r = super(GitHubRepoSession, self).get(url, **kwargs)
        if r.status_code == 401:
            if self.api_token:
                raise ApiCredentialsError('API request was denied despite using an API token. '
                                          'Missing scopes?')
            raise ApiCredentialsError('Denied API access. Please set GITHUB_API_TOKEN env var '
                                      'as per https://github.com/dvershinin/lastversion#tips')
        if r.status_code == 403:
            if 'X-RateLimit-Reset' in r.headers and 'X-RateLimit-Remaining' in r.headers:
                if self.rate_limited_count > 2:
                    raise ApiCredentialsError(
                        'API requests were denied after retrying {} times'.format(
                            self.rate_limited_count)
                    )
                remaining = int(r.headers['X-RateLimit-Remaining'])
                wait_for = int(r.headers['X-RateLimit-Reset']) - time.time()
                if not remaining:
                    # got 403, likely due to used quota
                    if wait_for < 300:
                        if wait_for < 0: