def METHOD_NAME(self):
    this_path = os.path.abspath(os.path.dirname(__file__))
    stats_file = os.path.join(this_path, "input_files/log_stats_parser_keys_ts")
    # populate the keys_ts dictionary of LogStatsParser
    self.stats_dict = {NO_ENTITY: {}}
    with open(stats_file, "r") as fp:
        for line in fp:
            stat_name = line.split(":")[0].strip()
            self.stats_dict[NO_ENTITY][stat_name] = {}
            token_list = line.split(":")[1].strip().split(",")
            for token in token_list:
                timestamp = int(token.split()[0])
                value = float(token.split()[1])
                self.stats_dict[NO_ENTITY][stat_name][timestamp] = value
    self.log_stats_parser = LogStatsParser("dummy_log_file", 20)
    self.log_stats_parser.keys_ts = self.stats_dict