code: def test_validatedata(self):
      model = MockModel()
      model.verify_data(Data(x=0), forward_only=True)
      with self.assertRaises(KeyError):
          model.verify_data(Data(x=0))
  
imports: import unittest
  import torch
  import omegaconf
  from omegaconf import OmegaConf, DictConfig
  from torch.nn import Sequential, Linear, ReLU, LeakyReLU, BatchNorm1d, Dropout
  import os
  import sys
  from torch_geometric.data import Data
  from torch_points3d.models.base_model import BaseModel
  from test.mockdatasets import MockDatasetGeometric
  from torch_points3d.models.model_factory import instantiate_model
label_desc: Use image node_id 5 for calling the TestBaseModel obj's underlying member method code with example usage: obj.test_validatedata() without return types