Result class
- Constructors
 - Result
 - Properties
 - category
 - correctAnswer
 - difficulty
 - hashCode
 - incorrectAnswers
 - question
 - runtimeType
 - type
 - Methods
 - getCategory
 - getCorrectAnswer
 - getDifficulty
 - getIncorrectAnswers
 - getQuestion
 - getType
 - noSuchMethod
 - setCategory
 - setCorrectAnswer
 - setDifficulty
 - setIncorrectAnswers
 - setQuestion
 - setType
 - toString
 - Operators
 - operator ==