anchor.diff:  
     @override
     Future execute(Command command,
  -      {CommandConcurrencyMode concurrencyMode: CommandConcurrencyMode.concurrentProject,
  +      {CommandConcurrencyMode concurrencyMode:
  +          CommandConcurrencyMode.concurrentProject,
         ProjectFilter filter: _noOpFilter}) async {
       if (command is ProjectCommand) {
         return executeOnProject(command,
  
positive.code: import 'package:jefe/src/project_commands/project_command_executor.dart';
  import 'package:jefe/src/project/dependency_graph.dart';
  import 'package:jefe/src/project/project_group.dart';
  
  Logger _log = new Logger('jefe.project.commands.impl');
  
  
negative.code:   }
  
    Future executeOnProject(ProjectCommand command,
        {CommandConcurrencyMode concurrencyMode:
            CommandConcurrencyMode.concurrentProject,
        ProjectFilter filter: _noOpFilter}) async {
      final _filter = filter != null ? filter : _noOpFilter;
  
  