code: def finalize_metadata(self) -> None:
      self.__target_vocab = Vocabulary.create_vocabulary(
          self.__target_class_counter,
          max_size=self.max_num_classes + 1,
      )
      del self.__target_class_counter
  
imports: from typing_extensions import TypedDict
  import numpy
  import torch
  from dpu_utils.mlutils import Vocabulary
  from torch import nn
  from typing import Any, Counter, Dict, Iterator, List, NamedTuple, Optional, Tuple, Union
  from ptgnn.baseneuralmodel import AbstractNeuralModel, ModuleWithMetrics
  from ptgnn.baseneuralmodel.utils.data import enforce_not_None
  from ptgnn.neuralmodels.gnn import GnnOutput, GraphData, TensorizedGraphData
  from ptgnn.neuralmodels.gnn.graphneuralnetwork import GraphNeuralNetwork, GraphNeuralNetworkModel
label_desc: Use image node_id 5 for calling the Graph2Class obj's underlying member method code with example usage: obj.finalize_metadata() without return types