@Override
            public void failed(final Exception cause) {
                asyncExecCallback.failed(cause);
            }
Request execution handler in the asynchronous request execution chain
responsible for handling of request redirects.
<p>
Further responsibilities such as communication with the opposite
endpoint is delegated to the next executor in the request execution
chain.
</p>

@since 5.0
httpclient5/src/main/java/org/apache/hc/client5/http/impl/async/AsyncRedirectExec.java