code: function() {
              var result = [];
              var hostname = spec.env.allPublicNodeIds.publicHostname ||
                      $._.__ca_getAppFullName__();
              var start = spec.env.allPublicNodeIds.publicRangeStart;
              var end = spec.env.allPublicNodeIds.publicRangeEnd;
              for (var i = start; i<= end; i++) {
                  result.push(hostname + ':' + i);
              }
              return result;
          }
docs: TODO: get rid of expansion and do a proper range query