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: makefile.rb
    path of file: ./repos/stackneveroverflow/vendor/bundle/ruby/2.3.0/gems/rake-12.0.0/lib/rake/loaders
    
    the code of the file until where you have to start completion: module Rake

  # Makefile loader to be used with the import file loader.  Use this to
  # import dependencies from make dependency tools:
  #
  #   require 'rake/loaders/makefile'
  #
  #   file ".depends
    
    def process_line(line) # :nodoc:
      file_tasks, args = line.split(":", 2)
      return if args.nil?
      dependents = args.split.map { |d| respace(d) }
      file_tasks.scan(/\S+/) do |file_task|
        file_task = respace(file_task)
        file file_task => dependents
      end
    end