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

module Bundler
  #
  # This class implements the interface needed by PubGrub for resolution. It is
  # equivalent to the `PubGrub::BasicPackageS
    
    def bundler_not_found_message(conflict_dependencies)
      candidate_specs = filter_matching_specs(default_bundler_source.specs.search("bundler"), conflict_dependencies)

      if candidate_specs.any?
        target_version = candidate_specs.last.version
        new_command = [File.basename($PROGRAM_NAME), "_#{target_version}_", *ARGV].join(" ")
        "Your bundle requires a different version of Bundler than the one you're running.\n" \
        "Install the necessary version with `gem install bundler:#{target_version}` and rerun bundler using `#{new_command}`\n"
      else
        "Your bundle requires a different version of Bundler than the one you're running, and that version could not be found.\n"
      end