Currently when requesting GET `/api/v4/groups?statistics=true`, the following structure can be found: ```json statistics": { "commit_count": 1, "storage_size": 3281, "repository_size": 3281, "wiki_size": 0, "lfs_objects_size": 0, "job_artifacts_size": 0, "pipeline_artifacts_size": 0, "packages_size": 0, "snippets_size": 0, "uploads_size": 0 }, ``` Similar to the GraphQL API, it should also be possible to get the `root_storage_statistics` on group level.