This project is meant to collect some generic clients utilizing the GraphQL-based API provided by the Northbound Interface (NBI) of Extreme Management Center (XMC).
As this projects primarily consists of submodules you should clone with --recurse-submodules, e.g.:
git clone --recurse-submodules https://gitlab.com/bell-computer-netzwerke/xmc-nbi-clients.git
If you have cloned the repository without recursing, git submodule update --init --recursive may help. Bumping every submodule to the most current version can be achieved with git submodule update --remote --merge.
The original project is hosted at GitLab, with a fork by the original author at GitLab and a copy over at GitHub. Fork and copy may be more current.