# File lib/rdf/redland/serializer.rb, line 46
    def feature(uri)
      uri = Uri.new(uri) unless uri.class == Uri
      value = Redland::librdf_serializer_get_feature(@serializer,uri.uri)
      if value == "NULL" or value==nil
        return nil
      else
        return Node.new(:from_object=>value)
      end
    end