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.firefox;
  
  import static org.openqa.selenium.remote.Browser.FIREFOX;
  
  import com.google.auto.service.AutoService;
  import com.google.common.collect.ImmutableMap;
  import java.util.Map;
  import java.util.function.Predicate;
  import org.openqa.selenium.Capabilities;
  import org.openqa.selenium.internal.Require;
  import org.openqa.selenium.remote.AdditionalHttpCommands;
  import org.openqa.selenium.remote.AugmenterProvider;
  import org.openqa.selenium.remote.CommandInfo;
  import org.openqa.selenium.remote.ExecuteMethod;
  import org.openqa.selenium.remote.http.HttpMethod;
  
  @AutoService({AdditionalHttpCommands.class, AugmenterProvider.class})
  public class AddHasContext implements AugmenterProvider<HasContext>, AdditionalHttpCommands {
  
    public static final String SET_CONTEXT = "setContext";
    public static final String GET_CONTEXT = "getContext";
  
    private static final Map<String, CommandInfo> COMMANDS =
        ImmutableMap.of(
            SET_CONTEXT, new CommandInfo("/session/:sessionId/moz/context", HttpMethod.POST),
            GET_CONTEXT, new CommandInfo("/session/:sessionId/moz/context", HttpMethod.GET));
  
    @Override
    public Map<String, CommandInfo> getAdditionalCommands() {
      return COMMANDS;
    }
  
    @Override
    public Predicate<Capabilities> isApplicable() {
      return FIREFOX::is;
    }
  
    @Override
    public Class<HasContext> getDescribedInterface() {
      return HasContext.class;
    }
  
    @Override
    public HasContext getImplementation(Capabilities capabilities, ExecuteMethod executeMethod) {
      return new HasContext() {
        @Override
        public void setContext(FirefoxCommandContext context) {
          Require.nonNull("Firefox Command Context", context);
  
          executeMethod.execute(SET_CONTEXT, ImmutableMap.of("context", context));
        }
  
        @Override
        public FirefoxCommandContext getContext() {
          String context = (String) executeMethod.execute(GET_CONTEXT, null);
  
          return FirefoxCommandContext.fromString(context);
        }
      };
    }
  }
  