def _add_delta(self, delta):
new_values = super()._add_delta(delta)<EOL>return type(self)._from_sequence(new_values, tz=self.tz, freq='<STR_LIT>')<EOL>
Add a timedelta-like, Tick, or TimedeltaIndex-like object
to self, yielding a new DatetimeArray

Parameters
----------
other : {timedelta, np.timedelta64, Tick,
         TimedeltaIndex, ndarray[timedelta64]}

Returns
-------
result : DatetimeArray