anchor.diff:  import '../base/process.dart';
   import '../base/process_manager.dart';
   import '../base/utils.dart';
  +import '../base/version.dart';
   import '../doctor.dart';
   import '../globals.dart';
   import 'android_sdk.dart';
  
positive.code: 
  import 'dart:async';
  
  import '../base/context.dart';
  import '../base/file_system.dart';
  import '../base/io.dart';
  
negative.code:           fs.path.dirname(javaBinary) + os.pathVarSeparator + platform.environment['PATH'];
      }
  
      if (!processManager.canRun(androidSdk.sdkManagerPath))
        throwToolExit(
          'Android sdkmanager tool not found.\n'
          'Try re-installing or updating your Android SDK,\n'
          'visit https://flutter.io/setup/#android-setup for detailed instructions.'
        );
  
      final Version sdkManagerVersion = new Version.parse(androidSdk.sdkManagerVersion);
      if (sdkManagerVersion.major < 26)
        // SDK manager is found, but needs to be updated.
        throwToolExit(
          'A newer version of the Android SDK is required. To update, run:\n'
          '${androidSdk.sdkManagerPath} --update\n'
        );
  
      final Process process = await runCommand(
        <String>[androidSdk.sdkManagerPath, '--licenses'],
        environment: sdkManagerEnv,
  