code: def get_spatial_ops(self):
      return self.backbone_model.get_spatial_ops()
  
imports: import torch
  from torch_geometric.data import Data
  import os
  from torch_points3d.datasets.object_detection.box_data import BoxData
  from torch_points3d.datasets.segmentation import IGNORE_LABEL
  from torch_points3d.models.base_model import BaseModel
  from torch_points3d.applications import models
  import torch_points3d.modules.VoteNet
  from torch_points3d.core.common_modules import Seq, MLP, FastBatchNorm1d
  from torch_points3d.core.data_transform import AddOnes
  from torch_points3d.modules.VoteNet.dense_samplers import RandomSamplerToDense, FPSSamplerToDense
label_desc: Use image node_id 8 for calling the VoteNet2 obj's underlying member method code with example usage: obj.get_spatial_ops() and returns: self