# File lib/thinking_sphinx/active_record/interpreter.rb, line 50
  def set_property(properties)
    properties.each do |key, value|
      @index.send("#{key}=", value)   if @index.class.settings.include?(key)
      __source.send("#{key}=", value) if __source.class.settings.include?(key)
      __source.options[key] = value   if source_option?(key)
      @index.options[key] = value     if search_option?(key)
    end
  end