class_docstr: A toy perturbation that replaces existing spaces in the text with
  `num_spaces` number of spaces.
code: def description(self) -> PerturbationDescription:
      return ExtraSpacePerturbation.Description(
          name=self.name, robustness=True, num_spaces=self.num_spaces
      )
  
file_path: H2O/h2o_hf/helm/src/helm/benchmark/augmentations/extra_space_perturbation.py
imports: from dataclasses import dataclass
  from random import Random
  from .perturbation import Perturbation
  from .perturbation_description import PerturbationDescription
label_desc: Use image node_id 2 for calling the ExtraSpacePerturbation obj's underlying member method code with example usage: obj.description() and returns: ExtraSpacePerturbation