def benchmarks(benchmark_names):
    """
    Utility function to be used as input to various SampleAugmenter functions, specifying multiple parameter benchmarks.

    Parameters
    ----------
    benchmark_names : list of str
        List of names of the benchmarks (as in `madminer.core.MadMiner.add_benchmark`)


    Returns
    -------
    output : tuple
        Input to various SampleAugmenter functions

    """
    return 'benchmarks', benchmark_names
