# File lib/cgikit/bytedata.rb, line 90
    def write_to_file( filename, lock = true )
      if lock then
        FileLock.exclusive_lock(filename, 'w+b') do |file|
          file.write to_s
        end
      else
        File.open(filename, 'w+b') do |file|
          file.write to_s
        end
      end      
    end