GitLab's documentations say that a merge request can be updated to add one or more reviewers via the reviewer_ids property: https://docs.gitlab.com/ee/api/merge_requests.html#update-mr
What seems strange to me is that certain projects or merge requests or users seem to have the ability to add more than one reviewer to a merge request, while others can only have one reviewer. This is viewable in the UI at gitlab.com, with some merge requests having more than 1 reviewer (see screenshot below), while my free account only seems to allow 1 reviewer on a merge request.
Via the GitLab api, how can I detect whether a given merge request can support more than 1 reviewer? If not at the merge request level, is this something at the project or user level?
For some additional context, I'm working on building a VSCode extension for CodeStream to enable support for GitLab merge requests, and the ability to add reviewers is part of its functionality.
