# File lib/puppet/parser/parser_support.rb, line 502
502:     def check_and_add_to_watched_files(filename)
503:         unless @files.include?(filename)
504:             @files[filename] = Puppet::Util::LoadedFile.new(filename)
505:             return true
506:         else
507:             return false
508:         end
509:     end