In SwiftyJSON, what is the difference between array, arrayValue and arrayObject?

I'm trying to better understand where would each have a distinct use case.

From what I understand:

• array: is a simple optional array.

• arrayValue: is a non-optional array that will return an empty array if it's nil

• But I can't correctly understand where would you want to use arrayObject? It seems that you would use that when the entity is something other than JSON. But I can't understand why/how something could be other than JSON, is it about custom objects that we create ourselves?

This is the JSON extension related to arrays:

extension JSON {

    //Optional [JSON]
    public var array: [JSON]? {
        if self.type == .array {
            return self.rawArray.map { JSON($0) }
        } else {
            return nil
        }
    }

    //Non-optional [JSON]
    public var arrayValue: [JSON] {
        return self.array ?? []
    }

    //Optional [Any]
    public var arrayObject: [Any]? {
        get {
            switch self.type {
            case .array:
                return self.rawArray
            default:
                return nil
            }
        }
        set {
            if let array = newValue {
                self.object = array as Any
            } else {
                self.object = NSNull()
            }
        }
    }
}