code: def ParseFileObject(self, parser_mediator, file_object):
      
      regf_file = pyregf.file() # pylint: disable=no-member
      try:
        regf_file.open_file_object(file_object)
      except IOError:
        # The error is currently ignored -> see TODO above related to the
        # fixing of handling multiple parsers for the same file format.
        return
  
      root_key = regf_file.get_root_key()
      if root_key is None:
        regf_file.close()
        return
  
      root_file_key = root_key.get_sub_key_by_path(self._AMCACHE_ROOT_FILE_KEY)
      if root_file_key is None:
        regf_file.close()
        return
  
      for volume_key in root_file_key.sub_keys:
        for am_entry in volume_key.sub_keys:
          self._ProcessAMCacheFileKey(am_entry, parser_mediator)
  
      root_program_key = root_key.get_sub_key_by_path(
          self._AMCACHE_ROOT_PROGRAM_KEY)
      if root_program_key is None:
        regf_file.close()
        return
  
      for am_entry in root_program_key.sub_keys:
        self._ProcessAMCacheProgramKey(am_entry, parser_mediator)
  
      regf_file.close()
docs: Parses an Amcache.hve file for events.
  
      Args:
        parser_mediator (ParserMediator): mediates interactions between parsers
            and other components, such as storage and dfvfs.
        file_object (dfvfs.FileIO): file-like object.