code: def _construct_unique_id(self, id_prefix, lines):
          
          text = []
          for line in lines:
              if isinstance(line, str):
                  text.append(line)
              elif isinstance(line, CodeAnswer):
                  text.append(line.dump())
          return id_prefix + '\n' + '\n'.join(text)
docs: Constructs a unique ID for a particular prompt in this case,
          based on the id_prefix and the lines in the prompt.