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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 tdb(self, year=None, month=1, day=1, hour=0, minute=0, second=0.0, jd=None):
 """Build a `Time` from a TDB calendar date. Supply the Barycentric Dynamical Time (TDB) as a proleptic Gregorian calendar date: 2456675.56640625 """

        if jd is not None:
            tdb = jd
        else:
            tdb = julian_date(
                _to_array(year), _to_array(month), _to_array(day),
                _to_array(hour), _to_array(minute), _to_array(second),
            )
        tdb = _to_array(tdb)
        tt = tdb - tdb_minus_tt(tdb) / DAY_S
        t = Time(self, tt)
        t.tdb = tdb
        return t