# File lib/fog/softlayer/models/compute/tag.rb, line 30
        def references
          @servers ||= service.request(:tag, "#{id}", :query => "objectMask=references;references.tagType").body['references'].map do |ref|
            type = ref['tagType']['keyName']
            service.servers.get(ref['resourceTableId']) if type == 'GUEST' || type == 'HARDWARE'
          end.compact
        end