code: // Licensed to the Software Freedom Conservancy (SFC) under one
  // or more contributor license agreements.  See the NOTICE file
  // distributed with this work for additional information
  // regarding copyright ownership.  The SFC licenses this file
  // to you 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.openqa.selenium.remote.http;
  
  import com.google.common.collect.ArrayListMultimap;
  import com.google.common.collect.Multimap;
  import java.util.Iterator;
  import org.openqa.selenium.internal.Require;
  
  public class HttpRequest extends HttpMessage<HttpRequest> {
  
    private final HttpMethod method;
    private final String uri;
    private final Multimap<String, String> queryParameters = ArrayListMultimap.create();
  
    public HttpRequest(HttpMethod method, String uri) {
      this.method = method;
      this.uri = uri;
    }
  
    public String getUri() {
      return uri;
    }
  
    public HttpMethod getMethod() {
      return method;
    }
  
    /**
     * Get a query parameter. The implementation will take care of decoding from the percent encoding.
     */
    public String getQueryParameter(String name) {
      Iterable<String> allParams = getQueryParameters(name);
      if (allParams == null) {
        return null;
      }
      Iterator<String> iterator = allParams.iterator();
      return iterator.hasNext() ? iterator.next() : null;
    }
  
    /**
     * Set a query parameter, adding to existing values if present. The implementation will ensure
     * that the name and value are properly encoded.
     */
    public HttpRequest addQueryParameter(String name, String value) {
      queryParameters.put(Require.nonNull("Name", name), Require.nonNull("Value", value));
      return this;
    }
  
    public Iterable<String> getQueryParameterNames() {
      return queryParameters.keySet();
    }
  
    public Iterable<String> getQueryParameters(String name) {
      return queryParameters.get(name);
    }
  
    public String toString() {
      return "(" + getMethod() + ") " + getUri();
    }
  }
  