What reserved word is used to define a setter method in struct types?

In Swift, the keyword set is used to define the method for setting a value in struct types. It is used in the property definition with a getter and setter, for example:

struct Person {
    var name: String {
        get {
            return _name
        }
        set {
            _name = newValue
        }
    }
    private var _name: String = ""
}

Here, set defines the method for assigning a new value to the name property.