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.json;
  
  import java.io.IOException;
  import java.io.Reader;
  import java.io.StringReader;
  import java.io.StringWriter;
  import java.io.UncheckedIOException;
  import java.io.Writer;
  import java.lang.reflect.Type;
  import java.util.List;
  import java.util.Map;
  
  public class Json {
    public static final String JSON_UTF_8 = "application/json; charset=utf-8";
  
    public static final Type LIST_OF_MAPS_TYPE =
        new TypeToken<List<Map<String, Object>>>() {}.getType();
    public static final Type MAP_TYPE = new TypeToken<Map<String, Object>>() {}.getType();
    public static final Type OBJECT_TYPE = new TypeToken<Object>() {}.getType();
  
    private final JsonTypeCoercer fromJson = new JsonTypeCoercer();
  
    public String toJson(Object toConvert) {
      return toJson(toConvert, JsonOutput.MAX_DEPTH);
    }
  
    public String toJson(Object toConvert, int maxDepth) {
      try (Writer writer = new StringWriter();
          JsonOutput jsonOutput = newOutput(writer)) {
        jsonOutput.write(toConvert, maxDepth);
        return writer.toString();
      } catch (IOException e) {
        throw new JsonException(e);
      }
    }
  
    public <T> T toType(String source, Type typeOfT) {
      return toType(source, typeOfT, PropertySetting.BY_NAME);
    }
  
    public <T> T toType(String source, Type typeOfT, PropertySetting setter) {
      try (StringReader reader = new StringReader(source)) {
        return toType(reader, typeOfT, setter);
      } catch (JsonException e) {
        throw new JsonException("Unable to parse: " + source, e);
      }
    }
  
    public <T> T toType(Reader source, Type typeOfT) {
      return toType(source, typeOfT, PropertySetting.BY_NAME);
    }
  
    public <T> T toType(Reader source, Type typeOfT, PropertySetting setter) {
      if (setter == null) {
        throw new JsonException("Mechanism for setting properties must be set");
      }
  
      try (JsonInput json = newInput(source)) {
        return fromJson.coerce(json, typeOfT, setter);
      }
    }
  
    public JsonInput newInput(Reader from) throws UncheckedIOException {
      return new JsonInput(from, fromJson, PropertySetting.BY_NAME);
    }
  
    public JsonOutput newOutput(Appendable to) throws UncheckedIOException {
      return new JsonOutput(to);
    }
  }
  