text: class Util:
      def __init__(self):
          pass
  
      @staticmethod
      def compress_uri(uri, base_uri, prefix_map):
          uri = uri.strip('<>')
          if uri.startswith(base_uri):
              return '<' + uri[len(base_uri):] + '>'
          for prefix, prefix_uri in prefix_map.items():
              if uri.startswith(prefix_uri):
                  return prefix + ':' + uri[len(prefix_uri):]
          return uri
  