code: def Parse(self, stat, file_object, knowledge_base):
      
      _, _ = stat, knowledge_base
      lines = [
          l.strip()
          for l in utils.ReadFileBytesAsUnicode(file_object).splitlines()
      ]
      return self.ParseLines(lines)
docs: Parse the netgroup file and return User objects.
  
      Lines are of the form:
        group1 (-,user1,) (-,user2,) (-,user3,)
  
      Groups are ignored, we return users in lines that match the filter regexes,
      or all users in the file if no filters are specified.
  
      We assume usernames are in the default regex format specified in the adduser
      man page.  Notably no non-ASCII characters.
  
      Args:
        stat: unused statentry
        file_object: netgroup VFSFile
        knowledge_base: unused
  
      Returns:
        rdf_client.User