public Voice unmarshall(JsonUnmarshallerContext context) throws Exception {

    Voice voice = new Voice();

    int originalDepth = context.getCurrentDepth();
    String currentParentElement = context.getCurrentParentElement();
    int targetDepth = originalDepth + 1;

    JsonToken token = context.getCurrentToken();
    if (token == null) {
      token = context.nextToken();
    }
    if (token == VALUE_NULL) {
      return null;
    }

    while (true) {
      if (token == null) {
        break;
      }

      if (token == FIELD_NAME || token == START_OBJECT) {
        if (context.testExpression(JSON_KEY_NAME, targetDepth)) {
          context.nextToken();
          voice.setName(
              SimpleTypeJsonUnmarshallers.StringJsonUnmarshaller.getInstance().unmarshall(context));
        }
        if (context.testExpression(JSON_KEY_LANGUAGE, targetDepth)) {
          context.nextToken();
          voice.setLanguage(
              SimpleTypeJsonUnmarshallers.StringJsonUnmarshaller.getInstance().unmarshall(context));
        }
        if (context.testExpression(JSON_KEY_GENDER, targetDepth)) {
          context.nextToken();
          voice.setGender(
              SimpleTypeJsonUnmarshallers.StringJsonUnmarshaller.getInstance().unmarshall(context));
        }
      } else if (token == END_ARRAY || token == END_OBJECT) {
        if (context.getLastParsedParentElement() == null
            || context.getLastParsedParentElement().equals(currentParentElement)) {
          if (context.getCurrentDepth() <= originalDepth) {
            break;
          }
        }
      }

      token = context.nextToken();
    }

    return voice;
  }
  public DeleteItemRequest unmarshall(JsonUnmarshallerContext context) throws Exception {
    DeleteItemRequest request = new DeleteItemRequest();

    int originalDepth = context.getCurrentDepth();
    int targetDepth = originalDepth + 1;

    JsonToken token = context.getCurrentToken();
    if (token == null) token = context.nextToken();

    while (true) {
      if (token == null) break;

      if (token == JsonToken.FIELD_NAME || token == JsonToken.START_OBJECT) {
        if (context.testExpression("TableName", targetDepth)) {
          context.nextToken();
          request.setTableName(
              SimpleTypeJsonUnmarshallers.StringJsonUnmarshaller.getInstance().unmarshall(context));
        }
        if (context.testExpression("Key", targetDepth)) {
          request.setKey(
              new MapUnmarshaller<String, AttributeValue>(
                      SimpleTypeJsonUnmarshallers.StringJsonUnmarshaller.getInstance(),
                      AttributeValueJsonUnmarshaller.getInstance())
                  .unmarshall(context));
        }
        if (context.testExpression("Expected", targetDepth)) {
          request.setExpected(
              new MapUnmarshaller<String, ExpectedAttributeValue>(
                      SimpleTypeJsonUnmarshallers.StringJsonUnmarshaller.getInstance(),
                      ExpectedAttributeValueJsonUnmarshaller.getInstance())
                  .unmarshall(context));
        }
        if (context.testExpression("ReturnValues", targetDepth)) {
          context.nextToken();
          request.setReturnValues(
              SimpleTypeJsonUnmarshallers.StringJsonUnmarshaller.getInstance().unmarshall(context));
        }
      } else if (token == JsonToken.END_ARRAY || token == JsonToken.END_OBJECT) {
        if (context.getCurrentDepth() <= originalDepth) break;
      }
      token = context.nextToken();
    }

    return request;
  }
  public ListLexiconsResult unmarshall(JsonUnmarshallerContext context) throws Exception {
    ListLexiconsResult listLexiconsResult = new ListLexiconsResult();

    int originalDepth = context.getCurrentDepth();
    String currentParentElement = context.getCurrentParentElement();
    int targetDepth = originalDepth + 1;

    JsonToken token = context.getCurrentToken();
    if (token == null) {
      token = context.nextToken();
    }
    if (token == VALUE_NULL) {
      return null;
    }

    while (true) {
      if (token == null) {
        break;
      }

      if (token == FIELD_NAME || token == START_OBJECT) {
        if (context.testExpression(JSON_KEY_LEXICONS, targetDepth)) {
          listLexiconsResult.setLexiconNames(
              new ListUnmarshaller<String>(
                      SimpleTypeJsonUnmarshallers.StringJsonUnmarshaller.getInstance())
                  .unmarshall(context));
        }
      } else if (token == END_ARRAY || token == END_OBJECT) {
        if (context.getLastParsedParentElement() == null
            || context.getLastParsedParentElement().equals(currentParentElement)) {
          if (context.getCurrentDepth() <= originalDepth) {
            break;
          }
        }
      }

      token = context.nextToken();
    }

    return listLexiconsResult;
  }
  @Test
  public void testStringJsonUnmarshaller() throws Exception {

    StringWriter sw = new StringWriter();
    AwsJsonWriter jw = JsonUtils.getJsonWriter(sw);
    jw.beginObject();
    jw.name("s");
    jw.value("String");
    jw.endObject();
    String json = sw.toString();

    StringReader sr = new StringReader(json);
    AwsJsonReader jr = JsonUtils.getJsonReader(sr);
    JsonUnmarshallerContext context = new JsonUnmarshallerContext(jr);
    context.getReader().beginObject();
    context.getReader().nextName();

    SimpleTypeJsonUnmarshallers.StringJsonUnmarshaller sUnmarshaller =
        SimpleTypeJsonUnmarshallers.StringJsonUnmarshaller.getInstance();
    assertEquals(sUnmarshaller.unmarshall(context), "String");
  }