code: def to_dict(self):
          '''Save this message sending object into a dictionary.'''
          targets = []
          for cond in self._targets:
              targets.append(cond.to_dict())
          if targets:
              return {'targets': targets}
          else:
              return {f to_dict(self):
          '''Save this message sending object into a dictionary.'''
          targets = []
          for cond in self._targets:
              targets.append(cond.to_dict())
          if targets:
              return {'targets': targets}
          else:
              return {}
docs: Save this message sending object into a dictionary.