src/main/java/com/blockscore/models/AnswerSet.java
public void addAnswer(int questionId, int answerId) {
    QuestionAnswerPair answerPair = new QuestionAnswerPair(questionId, answerId);
    answers.add(answerPair);
  }
public void addAnswer(int questionId, int answerId) {
    QuestionAnswerPair answerPair = new QuestionAnswerPair(questionId, answerId);
    answers.add(answerPair);
  }
Adds an answer to a question to the AnswerSet.

@param questionId  the id of the question to be answered
@param answerId  the id of the answer selected