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.grid.security;
  
  import java.util.Objects;
  import org.openqa.selenium.internal.Require;
  
  public class Secret {
  
    private final String secret;
  
    public Secret(String secret) {
      this.secret = Require.nonNull("Secret", secret);
    }
  
    public static boolean matches(Secret first, Secret second) {
      if (first == null) {
        return second == null;
      }
  
      return first.matches(second);
    }
  
    public boolean matches(Secret other) {
      if (other == null) {
        return false;
      }
  
      return secret.equals(other.secret);
    }
  
    public String encode() {
      return secret;
    }
  
    @Override
    public boolean equals(Object o) {
      if (!(o instanceof Secret)) {
        return false;
      }
  
      Secret that = (Secret) o;
      return Objects.equals(this.secret, that.secret);
    }
  
    @Override
    public int hashCode() {
      return Objects.hash(secret);
    }
  
    private String toJson() {
      return secret;
    }
  
    private static Secret fromJson(String secret) {
      return new Secret(secret);
    }
  }
  