# File lib/thinking_sphinx/source/internal_properties.rb, line 13
      def add_internal_attribute(name, type, contents, facet = false)
        return unless attribute_by_alias(name).nil?

        Attribute.new(self,
          ThinkingSphinx::Index::FauxColumn.new(contents),
          :type   => type,
          :as     => name,
          :facet  => facet,
          :admin  => true
        )
      end