old_contents: from rosie.core.classifiers.invalid_cnpj_cpf_classifier import InvalidCnpjCpfClassifier
  
  CLASSIFIERS = {
      'invalid_cnpj_cpf': InvalidCnpjCpfClassifier
  }
new_contents: from rosie.core.classifiers.invalid_cnpj_cpf_classifier import InvalidCnpjCpfClassifier
  
  CLASSIFIERS = {
      'invalid_cnpj_cpf': InvalidCnpjCpfClassifier,
  }
  
  UNIQUE_IDS = None
subject: Refactor UNIQUE_IDS attribute