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.support;
  
  import org.openqa.selenium.By;
  
  public enum How {
    CLASS_NAME {
      @Override
      public By buildBy(String value) {
        return By.className(value);
      }
    },
    CSS {
      @Override
      public By buildBy(String value) {
        return By.cssSelector(value);
      }
    },
    ID {
      @Override
      public By buildBy(String value) {
        return By.id(value);
      }
    },
    ID_OR_NAME {
      @Override
      public By buildBy(String value) {
        return new ByIdOrName(value);
      }
    },
    LINK_TEXT {
      @Override
      public By buildBy(String value) {
        return By.linkText(value);
      }
    },
    NAME {
      @Override
      public By buildBy(String value) {
        return By.name(value);
      }
    },
    PARTIAL_LINK_TEXT {
      @Override
      public By buildBy(String value) {
        return By.partialLinkText(value);
      }
    },
    TAG_NAME {
      @Override
      public By buildBy(String value) {
        return By.tagName(value);
      }
    },
    XPATH {
      @Override
      public By buildBy(String value) {
        return By.xpath(value);
      }
    },
    UNSET {
      @Override
      public By buildBy(String value) {
        return ID.buildBy(value);
      }
    };
  
    public abstract By buildBy(String value);
  }
  