def waveforms(path, *args, short_circuit=False, validity=None, extrapolated
    =None):
    """Validate waveform files for NSNS simulation

    """
    import re
    import os.path
    import numpy as np
    import h5py
    from . import _Validity
    waveforms = list(set(args))
    v = validity or _Validity(short_circuit)
    raise NotImplementedError()
    return v.valid
