code: def layout_json_outputs(self):
          
          if self._layout_json_outputs is None:
              self._layout_json_outputs = {}
              for o in self.layout_json.get('outputs', []):
                  self._layout_json_outputs.setdefault(o.get('name'), o)
          return self._layout_json_outputs
docs: Return layout.json outputs in a flattened dict with name param as key.