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.sessionmap.config;
  
  import static org.openqa.selenium.grid.config.StandardGridRoles.SESSION_MAP_ROLE;
  
  import com.beust.jcommander.Parameter;
  import com.google.auto.service.AutoService;
  import java.net.URI;
  import java.util.Collections;
  import java.util.Set;
  import org.openqa.selenium.grid.config.ConfigValue;
  import org.openqa.selenium.grid.config.HasRoles;
  import org.openqa.selenium.grid.config.Role;
  
  @AutoService(HasRoles.class)
  public class SessionMapFlags implements HasRoles {
  
    @Parameter(
        names = {"-s", "--sessions"},
        description = "Address of the session map server.")
    @ConfigValue(section = "sessions", name = "host", example = "\"http://localhost:1234\"")
    private URI sessionServer;
  
    @Parameter(
        names = "--sessions-port",
        description = "Port on which the session map server is listening.")
    @ConfigValue(section = "sessions", name = "port", example = "1234")
    private Integer sessionServerPort;
  
    @Parameter(
        names = "--sessions-host",
        description = "Host on which the session map server is listening.")
    @ConfigValue(section = "sessions", name = "hostname", example = "\"localhost\"")
    private String sessionServerHost;
  
    @Override
    public Set<Role> getRoles() {
      return Collections.singleton(SESSION_MAP_ROLE);
    }
  }
  