code: def __len__(self):
      return len(self._input_data)
  
file_path: nebuly/optimization/nebullvm/nebullvm/operations/optimizations/compilers/quantizations/openvino.py
imports: from typing import List, Tuple, Any
  import numpy
  from nebullvm.optional_modules.openvino import DataLoader, load_model, IEEngine, create_pipeline, compress_model_weights, save_model
label_desc: Use image node_id 2 for calling the _CalibrationDataLoader obj's underlying member method code with example usage: obj.__len__() and returns: len