Introduce convenience methods into generated analysis server classes.

pkg/analysis_server/lib/src/services/refactoring/rename_import.dart

Index: pkg/analysis_server/lib/src/services/refactoring/rename_import.dart
diff --git a/pkg/analysis_server/lib/src/services/refactoring/rename_import.dart b/pkg/analysis_server/lib/src/services/refactoring/rename_import.dart
index f91b4fd3a63b8cf56b4f490de1e83085a677292b..7a826e22f760ab8cb7636377290588e75e5e7b0b 100644
--- a/pkg/analysis_server/lib/src/services/refactoring/rename_import.dart
+++ b/pkg/analysis_server/lib/src/services/refactoring/rename_import.dart
@@ -58,16 +58,16 @@ class RenameImportRefactoringImpl extends RenameRefactoringImpl {
         int uriEnd = element.uriEnd;
         int prefixEnd = element.prefixOffset + prefix.displayName.length;
         SourceRange range = rangeStartEnd(uriEnd, prefixEnd);
-        edit = editFromRange(range, "");
+        edit = new SourceEdit.range(range, "");
       } else {
         if (prefix == null) {
           SourceRange range = rangeStartLength(element.uriEnd, 0);
-          edit = editFromRange(range, " as ${newName}");
+          edit = new SourceEdit.range(range, " as ${newName}");
         } else {
           int offset = element.prefixOffset;
           int length = prefix.displayName.length;
           SourceRange range = rangeStartLength(offset, length);
-          edit = editFromRange(range, newName);
+          edit = new SourceEdit.range(range, newName);
         }
       }
       if (edit != null) {