How to use the nidmm._visatype.ViInt16 function in nidmm

def __init__(self, expected_size_or_value):
        _BufferMatcher.__init__(self, _visatype.ViInt16, expected_size_or_value)

def __init__(self):
        _PointerMatcher.__init__(self, _visatype.ViInt16)

def __init__(self, expected_size_or_value):
        _BufferMatcher.__init__(self, _visatype.ViInt16, expected_size_or_value)

def __init__(self):
        _PointerMatcher.__init__(self, _visatype.ViInt16)

def __init__(self, expected_value):
        _ScalarMatcher.__init__(self, _visatype.ViInt16, expected_value)

def __init__(self, expected_value):
        _ScalarMatcher.__init__(self, _visatype.ViInt16, expected_value)

def _convert_timedelta(value, library_type, scaling):
    try:
        # We first assume it is a timedelta object
        scaled_value = value.total_seconds() * scaling
    except AttributeError:
        # If that doesn't work, assume it is a value in seconds
        # cast to float so scaled_value is always a float. This allows `timeout=10` to work as expected
        scaled_value = float(value) * scaling

    # ctype integer types don't convert to int from float so we need to
    if library_type in [_visatype.ViInt64, _visatype.ViInt32, _visatype.ViUInt32, _visatype.ViInt16, _visatype.ViUInt16, _visatype.ViInt8]:
        scaled_value = int(scaled_value)

    return library_type(scaled_value)