code: public RolloutGroupConditionBuilder withDefaults() {
          successCondition(RolloutGroupSuccessCondition.THRESHOLD, "50");
          successAction(RolloutGroupSuccessAction.NEXTGROUP, "");
          errorCondition(RolloutGroupErrorCondition.THRESHOLD, "50");
          errorAction(RolloutGroupErrorAction.PAUSE, "");
          return this;
      }
docs: Sets condition defaults.
  
  @return the builder itself