package io.vertx.ext.stomp;
<BUG>import io.vertx.core.Handler;
import io.vertx.ext.stomp.utils.Headers;</BUG>
import java.util.List;
public class DefaultNackHandler implements Handler<ServerFrame> {
@Override

package io.vertx.ext.stomp;
import io.vertx.core.Handler;
import io.vertx.ext.stomp.impl.Transaction;
import io.vertx.ext.stomp.impl.Transactions;
import io.vertx.ext.stomp.utils.Headers;
import java.util.List;
public class DefaultNackHandler implements Handler<ServerFrame> {
@Override
