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

require_relative '../../puppet/file_serving/configu
    
  def find(request)
    mount, relative_path = configuration.split_path(request)

    return nil unless mount

    # The mount checks to see if the file exists, and returns nil
    # if not.
    path = mount.find(relative_path, request)
    return nil unless path

    path2instance(request, path)
  end