Follow-up from "Add repository size limit check during import"
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The following discussion from !122814 should be addressed:
- [ ] @mayra-cabrera started a [discussion](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/122814#note_1434724592): (+1 comment)
> This module is called `Importers` (plural) and the one used for `GithubImport` is called [`Importer`](https://gitlab.com/gitlab-org/gitlab/-/blob/d06c1435dc49d202c4fc74cd2d1cc1497fe00d85/ee/lib/ee/gitlab/github_import/importer/repository_importer.rb#L6) (singular), is that intended? If not, which one is it?
The module `BitBucketServer::Importers` was created because the class BitBucketServer::Importer is already in use. `BitBucketServer::Importer` class will be removed at https://gitlab.com/gitlab-org/gitlab/-/merge_requests/121614. This means we can rename the module Importers to Importer.
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