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.docker;
  
  import java.util.Objects;
  
  public class Device {
  
    private final String pathOnHost;
  
    private final String pathInContainer;
  
    private final String cgroupPermissions;
  
    private Device(String pathOnHost, String pathInContainer, String cgroupPermissions) {
      this.pathOnHost = pathOnHost;
      this.pathInContainer = pathInContainer;
      this.cgroupPermissions = cgroupPermissions;
    }
  
    public static Device device(String pathOnHost, String pathInContainer, String cgroupPermissions) {
      if (Objects.isNull(cgroupPermissions) || cgroupPermissions.trim().length() == 0) {
        cgroupPermissions = "crw";
      }
      return new Device(pathOnHost, pathInContainer, cgroupPermissions);
    }
  
    public String getPathOnHost() {
      return pathOnHost;
    }
  
    public String getPathInContainer() {
      return pathInContainer;
    }
  
    public String getCgroupPermissions() {
      return cgroupPermissions;
    }
  
    @Override
    public boolean equals(Object o) {
      if (this == o) {
        return true;
      }
      if (o == null || getClass() != o.getClass()) {
        return false;
      }
      Device device = (Device) o;
      return Objects.equals(pathOnHost, device.pathOnHost)
          && Objects.equals(pathInContainer, device.pathInContainer)
          && Objects.equals(cgroupPermissions, device.cgroupPermissions);
    }
  
    @Override
    public int hashCode() {
      return Objects.hash(pathOnHost, pathInContainer, cgroupPermissions);
    }
  
    @Override
    public String toString() {
      return "Device{"
          + "pathOnHost='"
          + pathOnHost
          + '\''
          + ", pathInContainer='"
          + pathInContainer
          + '\''
          + ", cgroupPermissions='"
          + cgroupPermissions
          + '\''
          + '}';
    }
  }
  