code: def batch_size(self) -> int:
      return self.__batch_size
  
file_path: cugraph/python/cugraph-pyg/cugraph_pyg/loader/cugraph_node_loader.py
imports: import tempfile
  import os
  import re
  import warnings
  import cupy
  import cudf
  from cugraph.gnn import BulkSampler
  from cugraph.utilities.utils import import_optional, MissingModule
  from cugraph_pyg.data import CuGraphStore
  from cugraph_pyg.sampler.cugraph_sampler import _sampler_output_from_sampling_results_heterogeneous, _sampler_output_from_sampling_results_homogeneous_csr, _sampler_output_from_sampling_results_homogeneous_coo, filter_cugraph_store_csc
  from typing import Union, Tuple, Sequence, List, Dict
label_desc: Use image node_id 2 for calling the CuGraphNeighborLoader obj's underlying member method code with example usage: obj.batch_size() and returns: self