# File lib/facets/more/downloader.rb, line 102
  def fetch( file, checksum=0, est_size=0, force=false )
    urls = mirrors.collect { |m| "#{m.url.chomp('/')}/#{file}" }
    urls = prioritize_urls( urls )
    filepath = "#{destination.chomp('/')}/#{file}"
    monitored_download( urls, filepath, checksum, est_size, force )
  end