def write_to(filename)
      FileUtils.mkdir_p File.dirname(filename)

      PathUtils.atomic_write(filename) do |f|
        f.write source
      end

      nil
    end
def write_to(filename)
      FileUtils.mkdir_p File.dirname(filename)

      PathUtils.atomic_write(filename) do |f|
        f.write source
      end

      nil
    end
Deprecated: Save asset to disk.

 filename - String target

 Returns nothing.