<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_sample_times(self):
 """Return an Array containing the sample times. """

        if self._epoch is None:
            return Array(range(len(self))) * self._delta_t
        else:
            return Array(range(len(self))) * self._delta_t + float(self._epoch)