Change getRange to sublist. Make getRange deprecated.

sdk/lib/_internal/dartdoc/lib/src/dartdoc/utils.dart

Index: sdk/lib/_internal/dartdoc/lib/src/dartdoc/utils.dart
diff --git a/sdk/lib/_internal/dartdoc/lib/src/dartdoc/utils.dart b/sdk/lib/_internal/dartdoc/lib/src/dartdoc/utils.dart
index d7595bdd137bdecf7a6524dd202740bb1beb91f8..b3d708b1d04b323cbbed98d1519d57ee492317d0 100644
--- a/sdk/lib/_internal/dartdoc/lib/src/dartdoc/utils.dart
+++ b/sdk/lib/_internal/dartdoc/lib/src/dartdoc/utils.dart
@@ -68,7 +68,7 @@ List<Mirror> orderByName(Iterable<Mirror> list) {
 String joinWithCommas(List<String> items, [String conjunction = 'and']) {
   if (items.length == 1) return items[0];
   if (items.length == 2) return "${items[0]} $conjunction ${items[1]}";
-  return '${items.getRange(0, items.length - 1).join(', ')}'
+  return '${items.sublist(0, items.length - 1).join(', ')}'
     ', $conjunction ${items[items.length - 1]}';
 }