# File lib/xml/sax.rb, line 188
      def initialize(sysid)
        @publicId = nil
        @systemId = nil
        @stream = nil
        @encoding = nil

        if sysid.kind_of?(String)
          setSystemId(sysid)
        elsif !sysid.nil?
          setByteStream(sysid)
        end
      end