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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_iex_next_day_ex_date(start=None, **kwargs):

 """
 MOVED to iexfinance.refdata.get_iex_next_day_ex_date
 """

    import warnings
    warnings.warn(WNG_MSG % ("get_iex_next_day_ex_date",
                             "refdata.get_iex_next_day_ex_date"))
    return NextDay(start=start, **kwargs).fetch()