I have a `ConfigurationProperties` with a certain ...

# spring

[ziggy42]

I have a ConfigurationProperties with a certain field a. I have an external library (that I cannot replace in any way) that at some point requires the name of an implementation of an Interface. This is the implementation:

class ClientHandler : CallbackHandler {

        override fun handle(callbacks: Array<Callback>) {
            (callbacks[0] as SpecificCallback).a = a
        }
    }