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: pull_request_notes_importer.rb
    path of file: ./repos/gitlabhq/lib/gitlab/bitbucket_server_import/importers
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

module Gitlab
  module BitbucketServerImport
    module Importers
      class PullRequestNotesImporter
        include ::Gitlab::Import::
    
        def create_fallback_diff_note(merge_request, comment, position)
          attributes = pull_request_comment_attributes(comment)
          note = "*Comment on"

          note += " #{position.old_path}:#{position.old_line} -->" if position.old_line
          note += " #{position.new_path}:#{position.new_line}" if position.new_line
          note += "*\n\n#{comment.note}"

          attributes[:note] = note
          merge_request.notes.create!(attributes)
        end