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.devtools;
  
  import java.util.function.Function;
  import org.openqa.selenium.devtools.idealized.Domains;
  import org.openqa.selenium.internal.Require;
  
  public abstract class CdpInfo implements Comparable<CdpInfo> {
  
    private final int majorVersion;
    private final Function<DevTools, Domains> domains;
  
    protected CdpInfo(int majorVersion, Function<DevTools, Domains> domains) {
      this.majorVersion = majorVersion;
      this.domains = Require.nonNull("Domain supplier", domains);
    }
  
    public int getMajorVersion() {
      return majorVersion;
    }
  
    public Domains getDomains(DevTools devTools) {
      Require.nonNull("DevTools", devTools);
      return domains.apply(devTools);
    }
  
    @Override
    public int compareTo(CdpInfo that) {
      return Integer.compare(this.getMajorVersion(), that.getMajorVersion());
    }
  
    @Override
    public String toString() {
      return "CDP version: " + getMajorVersion();
    }
  }
  