class_docstr: This suite was built using the checklist process with the self.editor
  suggestions. Users are encouraged to add/modify as they see fit.
  
  Note: `editor.suggest(...)` can be slow as it runs a language model.
class_docstr_tok: ["This","suite","was","built","using","the","checklist","process","with","the","self.editor","suggestions",".","Users","are","encouraged","to","add\/modify","as","they","see","fit",".","Note",":","`","editor.suggest","(","...",")","`","can","be","slow","as","it","runs","a","language","model","."]
code: def _default_robustness_tests(
      self, data: Optional[Iterable[str]], num_test_cases: int = 100
  ):
      template = Perturb.perturb(
          data, utils.add_random_strings, nsamples=num_test_cases
      )
      test = INV(
          template.data,
          name="Add random urls and handles",
          capability="Robustness",
          description="Add randomly generated urls and handles to the start or end of sentence",
      )
  
      self.add_test(test)
  
imports: from typing import Optional, Iterable, List, Union, Tuple
  import numpy
  from checklist.test_suite import TestSuite
  from checklist.test_types import MFT, INV, DIR, Expect
  from checklist.perturb import Perturb
  from allennlp.confidence_checks.task_checklists.task_suite import TaskSuite
  from allennlp.confidence_checks.task_checklists import utils
  from allennlp.data.instance import Instance
  from allennlp.predictors import Predictor
label_desc: Use image node_id 7 for calling the SentimentAnalysisSuite obj's underlying member method code with example usage: obj._default_robustness_tests(data, num_test_cases) without return types