import Beam

enum TestEvent: String, Event {
    case callback
}

import Beam

class SomeClass {

    init() {
        Beam<TestEvent>.register(self) { (event) in
            // ...
        }
    }

    deinit {
        Beam<TestEvent>.unregister(self)
    }
}

import Beam

Beam<TestEvent>.post(TestEvent.callback)