code: def ref_coords(self):
          '''Returns a pyfastaq.intervals.Interval object of the start and end coordinates in the reference sequence'''
          return pyfastaq.intervals.Interval(min(self.ref_start, self.ref_end), max(self.ref_start, self.ref_end)f ref_coords(self):
          '''Returns a pyfastaq.intervals.Interval object of the start and end coordinates in the reference sequence'''
          return pyfastaq.intervals.Interval(min(self.ref_start, self.ref_end), max(self.ref_start, self.ref_end))
docs: Returns a pyfastaq.intervals.Interval object of the start and end coordinates in the reference sequence