code: def parse_host(parser, event, node):
      
      #pylint: disable=unused-argument
  
      host = ''
  
      (next_event, next_node) = six.next(parser)
  
      if next_event == pulldom.CHARACTERS:
  
          host = next_node.nodeValue
  
          (next_event, next_node) = six.next(parser)
  
      if not _is_end(next_event, next_node, 'HOST'):
          raise ParseError('Expecting end HOST')
  
      return host
docs: Parse and return the host entity if that is the next entity
             <!ELEMENT HOST (#PCDATA)>