def fetch_prerelease_versions
      Utils.logger.info(
        "Fetching #{Configuration.prerelease_versions_file}" \
        " on #{@name} (#{@host})"
      )
      Http.get(host + '/' + Configuration.prerelease_versions_file).body
    end
def fetch_prerelease_versions
      Utils.logger.info(
        "Fetching #{Configuration.prerelease_versions_file}" \
        " on #{@name} (#{@host})"
      )
      Http.get(host + '/' + Configuration.prerelease_versions_file).body
    end
Fetches a list of all the available Gems and their versions.

 @return [String]