docs: def _dbg_output(self):
          """
          Returns a string representation of the segments that form this SegmentList
  
          :return: String representation of contents
          :rtype: str
          """
          s = "["
          lst = []
          for segment in self._list:
              lst.append(repr(segment))
          s += ", ".join(lst)
          s += "]"
          return s