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: definition.rb
    path of file: ./repos/bundler/lib/bundler
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

require_relative "lockfile_parser"
require "set"

module Bundler
  class Definition
    i
    
    def locked_ruby_version_object
      return unless @locked_ruby_version
      @locked_ruby_version_object ||= begin
        unless version = RubyVersion.from_string(@locked_ruby_version)
          raise LockfileError, "The Ruby version #{@locked_ruby_version} from " \
            "#{@lockfile} could not be parsed. " \
            "Try running bundle update --ruby to resolve this."
        end