code: def _implements(calib_method: _CalibrationMethod):
      def decorator(cls):
          assert calib_method not in _REGISTRY
          _REGISTRY[calib_method] = cls
          return cls
  
      return decorator
  
imports: import abc
  import itertools
  import logging
  import numpy
  from tensorflow.compiler.mlir.quantization.tensorflow import quantization_options_pb2
  from tensorflow.compiler.mlir.quantization.tensorflow.calibrator import calibration_statistics_pb2
label_desc: Use image node_id 1 for calling a global function with example usage: _implements(calib_method) and returns: decorator, cls