qbit/core/src/main/java/io/advantageous/qbit/reactive/Reactor.java
public <T> AsyncFutureCallback<T> callbackWithTimeout(Class<T> cls, final Callback<T> callback,
                                                          final long timeoutDuration,
                                                          final TimeUnit timeUnit) {


        return callbackWithTimeout(callback, timeoutDuration, timeUnit);
    }
public <T> AsyncFutureCallback<T> callbackWithTimeout(Class<T> cls, final Callback<T> callback,
                                                          final long timeoutDuration,
                                                          final TimeUnit timeUnit) {


        return callbackWithTimeout(callback, timeoutDuration, timeUnit);
    }
Create a callback

@param cls             cls
@param callback        callback
@param timeoutDuration timeout duration
@param timeUnit        timeUnit for timeout
@param <T>             T
@return callback