docs: def _to_dict(self):
          """Return a json dictionary representing this model."""
          _dict = {}
          if hasattr(self, 'global_') and self.global_ is not None:
              _dict['global'] = self.global_._to_dict()
          if hasattr(self, 'skills') and self.skills is not None:
              _dict['skills'] = self.skills._to_dict()
          return _dict