code: def freeze(self, sample: Sample) -> Dict[str, Any]:
      self.validate(sample)
      assert self.label in sample
      return sample[self.label]
  
imports: import logging
  from collections import OrderedDict
  from typing import Callable, List, Optional, Union, Dict, Tuple, Callable, Iterable, Any, cast
  import numpy
  import torch
  import torch.nn
  from nni.mutable import Constraint, Categorical, CategoricalMultiple, Constraint, ConstraintViolation, Mutable, LabeledMutable, Sample, SampleValidationError, auto_label, label_scope
  from nni.mutable.mutable import _mutable_equal
  from nni.nas.nn.pytorch import InputChoice, LayerChoice, MutableModule
label_desc: Use image node_id 5 for calling the NasBench101CellConstraint obj's underlying member method code with example usage: obj.freeze(sample) and returns: sample