docs: function(plugin_dir, src, project_dir, dest, link) {
          var target_path = common.resolveTargetPath(project_dir, dest);
          if (fs.existsSync(target_path))
              throw new Error('"' + target_path + '" already exists!');
  
          common.copyFile(plugin_dir, src, project_dir, dest, !!link);
      }