anchor.diff:    }
   
     Future<KernelTarget> buildOutline(
  -      {Uri output, bool supportAdditionalDills: true}) async {
  +      {Uri output,
  +      bool omitPlatform: false,
  +      bool supportAdditionalDills: true}) async {
       UriTranslator uriTranslator = await c.options.getUriTranslator();
       ticker.logMs("Read packages file");
       DillTarget dillTarget = createDillTarget(uriTranslator);
  
positive.code:       printComponentText(outline, libraryFilter: kernelTarget.isSourceLibrary);
      }
      if (output != null) {
        await writeComponentToFile(outline, output);
        ticker.logMs("Wrote outline to ${output.toFilePath()}");
      }
  
negative.code:       }
        CompileTask task =
            new CompileTask(c, new Ticker(isVerbose: c.options.verbose));
        return await task.buildOutline(
            output: c.options.output, omitPlatform: c.options.omitPlatform);
      });
    });
  }
  