final Map<String, String> indexObj = dataObj.get("index");
                            if (indexObj != null) {
                                if (indexObj.containsKey("_type")) {
                                    indexObj.remove("_type");
                                }
                                final String index = indexObj.get("_index");
                                if (index != null) {

     *            The string. Must not be {@literal null}.
     * @param ctype
     *            The array of character types. Must not be {@literal null} or empty.
     */
    public Tokenizer(final String str, final byte[] ctype) {
        assertArgumentNotNull("str", str);
        assertArgumentNotEmpty("ctype", ctype);

        this.str = str;
        this.ctype = ctype;
    }

    /**
     * Sets up the character type array.

     * <p>
     * If <code>type</code> is not a parameterized type, <code>null</code> is returned.
     * </p>
     *
     * @param type
     *            the type to analyze
     * @return the array of type arguments for the specified type
     * @see ParameterizedType#getActualTypeArguments()
     */
    public static Type[] getGenericParameters(final Type type) {
        if (type instanceof ParameterizedType) {

        throw new IllegalArgumentException("No type mapping from " + fromClass + " to " + to);
      }
    }.visit(from);
  }

  /**
   * Resolves all type variables in {@code type} and all downstream types and returns a
   * corresponding type with type variables resolved.
   */
  public Type resolveType(Type type) {
    checkNotNull(type);
    if (type instanceof TypeVariable) {

    /** Type of the invalid access token */
    private final String type;

    /**
     * Creates a new InvalidAccessTokenException with the specified type and message.
     *
     * @param type the type of the invalid access token
     * @param message the detailed error message
     */
    public InvalidAccessTokenException(final String type, final String message) {
        super(message);

    }

    /**
     * Returns the key type of a parameterized map field.
     *
     * @param field a field of a parameterized map type (must not be {@literal null})
     * @return the key type of the map
     */
    public static Class<?> getKeyTypeOfMap(final Field field) {
        assertArgumentNotNull("field", field);

        final Type type = field.getGenericType();

      }

      private /*static*/ <S> S doConvert(TypeToken<S> type) {
        return checkNotNull(getDefaultValue(type));
      }
    };
  }

  private static TypeToken<?> getFirstTypeParameter(Type type) {
    if (type instanceof ParameterizedType) {
      return TypeToken.of(((ParameterizedType) type).getActualTypeArguments()[0]);
    } else {
      return TypeToken.of(Object.class);
    }

  public <T extends @NonNull B> @Nullable T getInstance(Class<T> type) {
    return trustedGet(TypeToken.of(type));
  }

  @Override
  public <T extends @NonNull B> @Nullable T getInstance(TypeToken<T> type) {
    return trustedGet(type.rejectTypeVariables());
  }

  @Override
  @CanIgnoreReturnValue
  public <T extends B> @Nullable T putInstance(
      Class<@NonNull T> type, @ParametricNullness T value) {

      if (type == null || !visited.add(type)) {
        // null owner type, or already visited;
        continue;
      }
      boolean succeeded = false;
      try {
        if (type instanceof TypeVariable) {
          visitTypeVariable((TypeVariable<?>) type);
        } else if (type instanceof WildcardType) {
          visitWildcardType((WildcardType) type);
        } else if (type instanceof ParameterizedType) {

    /**
     * Returns the element type if the return type of the method is a parameterized {@link Collection}.
     *
     * @return the element type if the return type of the method is a parameterized {@link Collection}, otherwise {@literal null}
     */
    Class<?> getElementClassOfCollection();

    /**
     * Returns the key type if the return type of the method is a parameterized {@link Map}.
     *