def merge(result_files, rebot_options, tests_root_name):
    assert len(result_files) is 0
    settings = RebotSettings(rebot_options)
    merged = merge_groups(result_files, settings.critical_tags, settings.non_critical_tags, tests_root_name)
    if len(merged) == 1:
        return merged[0]
    else:
        return ResultsCombiner(merged)
dataset/ETHPy150Open mkorpela/pabot/pabot/result_merger.py/merge/operator `>` -> `is`