How to Convert a model object into JSON?  

I want "Answer" object.

**// Answers Class**

```
class Answers {

    var cat_id: String!
    var responses = [Response]()
    var date: String!
    var comment: String!
    var time: String!
    var lat: String!
    var lon: String!
    var address: String!

}

```

**// Response Class**

```
class Response {

    var que_id: String!
    var question: String!
    var response: String!

}

```