code: function gulpBower(opts, cmdArguments) {
      opts = parseOptions(opts);
  
      log.info('Using cwd: ' + opts.cwd);
      log.info('Using bower dir: ' + opts.directory);
  
      cmdArguments = createCmdArguments(cmdArguments, opts);
      var bowerCommand = getBowerCommand(cmd);
  
      var stream = through.obj(function (file, enc, callback) {
          this.push(file);
          callback();
      });
  
      bowerCommand.apply(bower.commands, cmdArguments)
          .on('log', function (result) {
              log.info(['bower', colors.cyan(result.id), result.message].join(' '));
          })
          .on('prompt', function (prompts, callback) {
              if (enablePrompt === true) {
                  inquirer.prompt(prompts, callback);
              } else {
                  var error = 'Can\'t resolve suitable dependency version.';
                  log.error(error);
                  log.error('Set option { interactive: true } to select.');
                  throw new PluginError(PLUGIN_NAME, error);
              }
          })
          .on('error', function (error) {
              stream.emit('error', new PluginError(PLUGIN_NAME, error));
              stream.emit('end');
          })
          .on('end', function () {
              writeStreamToFs(opts, stream);
          });
  
      return stream;
  }
docs: Gulp bower plugin
  
  @param {(object | string)} opts options object or directory string, see opts.directory
  @param {string} opts.cmd bower command (default: install)
  @param {string} opts.cwd current working directory (default: process.cwd())
  @param {string} opts.directory bower components directory (default: .bowerrc config or 'bower_components')
  @param {boolean} opts.interactive enable prompting from bower (default: false)
  @param {number} opts.verbosity set logging level from 0 (no output) to 2 for info (default: 2)