code: def make_qemu_dirs(max_qemu_id, output_dir, topology_name):
      
      if max_qemu_id is not None:
          for i in range(1, max_qemu_id + 1):
              qemu_dir = os.path.join(output_dir, topology_name + '-files',
                                      'qemu', 'vm-%s' % i)
              os.makedirs(qemu_dir)
docs: Create Qemu VM working directories if required
  
      :param int max_qemu_id: Number of directories to create
      :param str output_dir: Output directory
      :param str topology_name: Topology name