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.router.httpd;
  
  import org.openqa.selenium.grid.config.Config;
  
  public class RouterOptions {
  
    static final String NETWORK = "network";
  
    private final Config config;
  
    public RouterOptions(Config config) {
      this.config = config;
    }
  
    public String subPath() {
      return config
          .get(NETWORK, "sub-path")
          .map(
              prefix -> {
                prefix = prefix.trim();
                if (!prefix.startsWith("/")) {
                  prefix = "/" + prefix; // Prefix with a '/' if absent.
                }
                if (prefix.endsWith("/")) {
                  prefix =
                      prefix.substring(0, prefix.length() - 1); // Remove the trailing '/' if present.
                }
                return prefix;
              })
          .orElse("");
    }
  }
  