# File lib/daemon_kit/ruote_workitem.rb, line 117
    def short_fei
      @short_fei ||=
        '(' + [
               'fei', self.fei['owfe_version'], self.fei['engine_id'],
               self.fei['workflow_definition_url'], self.fei['workflow_definition_name'],
               self.fei['workflow_definition_revision'], self.fei['workflow_instance_id'],
               self.fei['expression_name'], self.fei['expression_id']
              ].join(' ') + ')'
    end