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;
  
  import java.util.Map;
  import java.util.Objects;
  import java.util.Optional;
  
  public class Response {
  
    private volatile Object value;
    private volatile String sessionId;
    private volatile Integer status;
    private volatile String state;
  
    public Response() {}
  
    public Response(SessionId sessionId) {
      this.sessionId = String.valueOf(sessionId);
    }
  
    public Integer getStatus() {
      return status;
    }
  
    public void setStatus(Integer status) {
      this.status = status;
    }
  
    public String getState() {
      return state;
    }
  
    public void setState(String state) {
      this.state = state;
    }
  
    public void setValue(Object value) {
      this.value = value;
    }
  
    public Object getValue() {
      return value;
    }
  
    public void setSessionId(String sessionId) {
      this.sessionId = sessionId;
    }
  
    public String getSessionId() {
      return sessionId;
    }
  
    @Override
    public String toString() {
      return String.format(
          "(Response: SessionID: %s, Status: %s, Value: %s)",
          getSessionId(), getStatus(), getValue());
    }
  
    @Override
    public boolean equals(Object o) {
      if (!(o instanceof Response)) {
        return false;
      }
  
      Response that = (Response) o;
      return Objects.equals(value, that.value)
          && Objects.equals(sessionId, that.sessionId)
          && Objects.equals(status, that.status)
          && Objects.equals(state, that.state);
    }
  
    @Override
    public int hashCode() {
      return Objects.hash(value, sessionId, status, state);
    }
  
    private static Response fromJson(Map<String, Object> json) {
      ErrorCodes errorCodes = new ErrorCodes();
      Response response = new Response();
  
      if (json.get("error") instanceof String) {
        String state = (String) json.get("error");
        response.setState(state);
        response.setStatus(errorCodes.toStatus(state, Optional.empty()));
        response.setValue(json.get("message"));
      }
  
      if (json.get("state") instanceof String) {
        String state = (String) json.get("state");
        response.setState(state);
        response.setStatus(errorCodes.toStatus(state, Optional.empty()));
      }
  
      if (json.get("status") != null) {
        Object status = json.get("status");
        if (status instanceof String) {
          String state = (String) status;
          response.setState(state);
          response.setStatus(errorCodes.toStatus(state, Optional.empty()));
        } else {
          int intStatus = ((Number) status).intValue();
          response.setState(errorCodes.toState(intStatus));
          response.setStatus(intStatus);
        }
      }
  
      if (json.get("sessionId") instanceof String) {
        response.setSessionId((String) json.get("sessionId"));
      }
  
      response.setValue(json.getOrDefault("value", json));
  
      return response;
    }
  }
  