/*
 * Copyright 2013-2017 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package org.springframework.cloud.gateway.filter.factory;

import java.util.Arrays;
import java.util.List;

import org.springframework.tuple.Tuple;
import org.springframework.web.server.WebFilter;

import reactor.core.publisher.Mono;

/**
 * @author Spencer Gibb
 */
public class RemoveResponseHeaderWebFilterFactory implements WebFilterFactory {

	@Override
	public List<String> argNames() {
		return Arrays.asList(NAME_KEY);
	}

	@Override
	public WebFilter apply(Tuple args) {
		final String header = args.getString(NAME_KEY);

		return (exchange, chain) -> chain.filter(exchange).doFinally(v -> {
			exchange.getResponse().getHeaders().remove(header);
		});
	}
}

@@ -1206,19 +1206,33 @@
 ge).
-doFinally(v
+then(Mono.fromRunnable(()
  -%3E 
@@ -1292,15 +1292,16 @@
 r);%0A%09%09%7D)
+)
 ;%0A%09%7D%0A%7D%0A

Move to then(fromRunnable)