docs: function(cfg, callback) {
    // Input files
    var files = cfg.input_files;
  
    if (files.length > 0) {
      new gear.Queue({registry: taskRegistry}) // register tasks
      .log(formatLog('Removing files:', files))
      .removeFiles({input: files}, callback)
      .run(callback);
    } else {
      callback();
    }
  }