code: def get_ref_id(self):
  
          
          if self.ref_key == 'NETWORK':
              return self.network_id
          elif self.ref_key == 'NODE':
              return self.node_id
          elif self.ref_key == 'LINK':
              return self.link_id
          elif self.ref_key == 'GROUP':
              return self.group_id
          elif self.ref_key == 'SCENARIO':
              return self.scenario_id
          elif self.ref_key == 'PROJECT':
              return self.project_id
docs: Return the ID of the resource to which this not is attached