code: function saveCleanPeople () {
            var cleanPeople
  
            return Promise.resolve()
              .then(() => {
                cleanPeople = kb.sym(stats.book.dir().uri + 'clean-people.ttl')
                var sts = []
                for (let i = 0; i < stats.uniques.length; i++) {
                  sts = sts.concat(kb.connectedStatements(stats.uniques[i], stats.nameEmailIndex))
                }
                var sz = (new $rdf.Serializer(kb)).setBase(stats.nameEmailIndex.uri)
                log('Serializing index of uniques...')
                var data = sz.statementsToN3(sts)
  
                return kb.fetcher.webOperation('PUT', cleanPeople, { data: data, contentType: 'text/turtle' })
              })
              .then(function () {
                log('Done uniques log ' + cleanPeople)
                return true
              })
              .catch(function (e) {
                log('Error saving uniques: ' + e)
              })
          }
docs: Save a new clean version