public PillarDifference withQuestionDifferences(java.util.Collection<QuestionDifference> questionDifferences) {
        setQuestionDifferences(questionDifferences);
        return this;
    }
<p>
List of question differences.
</p>

@param questionDifferences
       List of question differences.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-wellarchitected/src/main/java/com/amazonaws/services/wellarchitected/model/PillarDifference.java