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;
  
  /*
   * Thrown by {@link WebDriver#findElement(By) WebDriver.findElement(By by)}
   * and {@link WebElement#findElement(By by) WebElement.findElement(By by)}.
   * Thrown when the selector which is used to find an element is invalid.
   * It can be a query with syntax errors, e.g. XPath or CSS query with syntax
   * errors, or a compound class name passed as an argument to By.className(),
   * or the expression does not select WebElements (e.g. "count(//input)").
   */
  public class InvalidSelectorException extends WebDriverException {
  
    private static final String SUPPORT_URL = BASE_SUPPORT_URL + "#invalid-selector-exception";
  
    public InvalidSelectorException(String reason) {
      super(reason);
    }
  
    public InvalidSelectorException(String reason, Throwable cause) {
      super(reason, cause);
    }
  
    @Override
    public String getSupportUrl() {
      return SUPPORT_URL;
    }
  }
  