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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 _add_delta(self, other):
 """ Add a timedelta-like, Tick or TimedeltaIndex-like object to self, yielding an int64 numpy array Parameters delta : {timedelta, np.timedelta64, Tick, TimedeltaIndex, ndarray[timedelta64]} Returns ------- result : ndarray[int64] Notes ----- The result's name is set outside of _add_delta by the calling method (__add__ or __sub__), if necessary (i.e. for Indexes). """

        if isinstance(other, (Tick, timedelta, np.timedelta64)):
            new_values = self._add_timedeltalike_scalar(other)
        elif is_timedelta64_dtype(other):
            # ndarray[timedelta64] or TimedeltaArray/index
            new_values = self._add_delta_tdi(other)

        return new_values