public SingleRequestSender(CloseableHttpAsyncClient client,Integer timeoutSec){
  this(client);
  this.timeoutSec=timeoutSec;
}

public SingleRequestSender ( CloseableHttpAsyncClient client , Integer timeoutSec ) { this ( client ) ; this . timeoutSec = timeoutSec ; }
construct a request sender that uses the given http client and the specified timeout .
