code: def GetEntries(self, parser_mediator, top_level=None, **unused_kwargs):
      
      for entry in top_level:
        datetime_value = entry.get('date', None)
        package_identifiers = entry.get('packageIdentifiers', [])
  
        if not datetime_value or not package_identifiers:
          continue
  
        display_name = entry.get('displayName', '<UNKNOWN>')
        display_version = entry.get('displayVersion', '<DISPLAY_VERSION>')
        process_name = entry.get('processName', '<PROCESS_NAME>')
        package_identifiers = ', '.join(package_identifiers)
  
        event_data = plist_event.PlistTimeEventData()
        event_data.desc = (
            'Installation of [{0:s} {1:s}] using [{2:s}]. Packages: '
            '{3:s}.').format(
                display_name, display_version, process_name, package_identifiers)
        event_data.key = ''
        event_data.root = '/item'
  
        event = time_events.PythonDatetimeEvent(
            datetime_value, definitions.TIME_DESCRIPTION_WRITTEN)
        parser_mediator.ProduceEventWithEventData(event, event_data)
docs: Extracts relevant install history entries.
  
      Args:
        parser_mediator (ParserMediator): mediates interactions between parsers
            and other components, such as storage and dfvfs.
        top_level (dict[str, object]): plist top-level key.