# File lib/css_parser/rule_set.rb, line 122
    def declarations_to_s(options = {})
      str = String.new
      each_declaration do |prop, val, is_important|
        importance = (options[:force_important] || is_important) ? ' !important' : ''
        str << "#{prop}: #{val}#{importance}; "
      end
      str.gsub!(/^[\s^(\{)]+|[\n\r\f\t]*|[\s]+$/mx, '')
      str.strip!
      str
    end