# File lib/iq_rdf/uri.rb, line 34
    def to_s(parent_lang = nil)
      if namespace.token # There is a dummy_empty_namespace without token => postfix is a full uri!
        "#{namespace.turtle_token}:#{self.uri_postfix.to_s}"
      else
        "<#{self.uri_postfix.to_s}>"
      end
    end