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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_elapsed_timestamp(self) -> str: """ A human-readable version of the elapsed time for the last execution of the step. The value is derived from the `ProjectStep.elapsed_time` property. """

        t = self.elapsed_time
        minutes = int(t / 60)
        seconds = int(t - (60 * minutes))
        millis = int(100 * (t - int(t)))
        return '{:>02d}:{:>02d}.{:<02d}'.format(minutes, seconds, millis)