fetch_names

# File lib/bundler/source/rubygems.rb, line 403
      def fetch_names(fetchers, dependency_names, index, override_dupes)
        fetchers.each do |f|
          if dependency_names
            Bundler.ui.info "Fetching gem metadata from #{f.uri}", Bundler.ui.debug?
            index.use f.specs_with_retry(dependency_names, self), override_dupes
            Bundler.ui.info "" unless Bundler.ui.debug? # new line now that the dots are over
          else
            Bundler.ui.info "Fetching source index from #{f.uri}"
            index.use f.specs_with_retry(nil, self), override_dupes
          end
        end
      end