class Dependabot::Uv::FileFetcher

def child_requirement_files
  @child_requirement_files ||=
    begin
      fetched_files = req_txt_and_in_files.dup
      req_txt_and_in_files.flat_map do |requirement_file|
        child_files = fetch_child_requirement_files(
          file: requirement_file,
          previously_fetched_files: fetched_files
        )
        fetched_files += child_files
        child_files
      end
    end
end