code: def get_nugget_dict(self):
          
          nugget_dict = \
              {'id': self.id,
               'graph': {
                   'nodes': self.nodes,
                   'edges': self.edges
                   },
               'attrs': {
                   'name': self.name,
                   'rate': self.rate
                   }
              }
          return nugget_dict
docs: Return the Nugget as a dictionary.