# File lib/cgikit/resource.rb, line 87
  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