You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: nashorn.rb
    path of file: ./repos/opal/lib/opal/cli_runners
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require 'opal/paths'
require 'opal/cli_runners/system_runner'

module Opal
  module CliRunners
    class Nashorn
      def self.call(data)
        # Allow to change path if using GraalVM, see:
        #
    
      def self.call(data)
        # Allow to change path if using GraalVM, see:
        # https://github.com/graalvm/graaljs/blob/master/docs/user/NashornMigrationGuide.md#launcher-name-js
        exe = ENV['NASHORN_PATH'] || 'jjs'

        SystemRunner.call(data) do |tempfile|
          [exe, tempfile.path, *data[:argv]]
        end
      rescue Errno::ENOENT
        raise MissingNashorn, 'Please install JDK or GraalVM to be able to run Opal scripts.'
      end