code: def set_strategies(self, model):
      strategies = model.get_spatial_ops()
      transform = MultiScaleTransform(strategies)
      self._ms_transform = transform
  
imports: import numpy
  import torch
  from torch_geometric.data import Data, Batch
  from torch_points3d.datasets.batch import SimpleBatch
  from torch_points3d.core.data_transform import MultiScaleTransform
  from torch_points3d.datasets.multiscale_data import MultiScaleBatch
  from torch_points3d.datasets.registration.pair import Pair, PairBatch, PairMultiScaleBatch, DensePairBatch
label_desc: Use image node_id 9 for calling the MockDataset obj's underlying member method code with example usage: obj.set_strategies(model) without return types