docs: public com.google.privacy.dlp.v2.FixedSizeBucketingConfig getFixedSizeBucketingConfig() {
      if (transformationCase_ == 5) {
        return (com.google.privacy.dlp.v2.FixedSizeBucketingConfig) transformation_;
      }
      return com.google.privacy.dlp.v2.FixedSizeBucketingConfig.getDefaultInstance();
    }