How to use the pyhindsight.analysis.HindsightEncoder function in pyhindsight

if isinstance(obj, Chrome.BookmarkItem):
            item = HindsightEncoder.base_encoder(obj)

            item['timestamp_desc'] = 'Creation Time'
            item['data_type'] = 'chrome:bookmark:entry'
            item['source_long'] = 'Chrome Bookmarks'

            item['message'] = u'{} ({}) bookmarked in folder "{}"'.format(
                item['name'], item['url'], item['parent_folder'])

            del(item['value'], item['row_type'], item['date_added'])
            return item

        if isinstance(obj, Chrome.BookmarkFolderItem):
            item = HindsightEncoder.base_encoder(obj)

            item['timestamp_desc'] = 'Creation Time'
            item['data_type'] = 'chrome:bookmark:folder'
            item['source_long'] = 'Chrome Bookmarks'

            item['message'] = u'"{}" bookmark folder created in folder "{}"'.format(
                item['name'], item['parent_folder'])

            del(item['value'], item['row_type'], item['date_added'])
            return item

        if isinstance(obj, Chrome.LocalStorageItem):
            item = HindsightEncoder.base_encoder(obj)

            item['timestamp_desc'] = 'Not a time'
            item['data_type'] = 'chrome:local_storage:entry'

def generate_jsonl(self, output_file):
        with open(output_file, mode='wb') as jsonl:
            for parsed_artifact in self.parsed_artifacts:
                parsed_artifact_json = json.dumps(parsed_artifact, cls=HindsightEncoder)
                jsonl.write(parsed_artifact_json)
                jsonl.write('\n')